Best .300 Blackout Scopes and Optics Reviewed

Quick Answer

For .300 Blackout, we recommend Primary Arms SLx 1-6×24mm FFP (best overall) with dual subsonic/supersonic holds, EOTech XPS2-300 for holographic speed, Trijicon ACOG TA31-C for bombproof duty use, Primary Arms SLx 3X MicroPrism for lightweight builds, Meprolight Foresight for tech-savvy users who switch ammo types, Leupold VX-Freedom 3-9×40mm for hunters needing clear dawn/dusk glass, and Bushnell AR Optics 1-4×24mm as an affordable LPVO entry point.

Key Takeaways

• .300 BLK needs different hold points for subsonic versus supersonic loads
• 1-6× LPVOs balance close-quarters speed with mid-range precision
• Fixed magnification saves weight on short-barrel builds
• Smart reticles beat plain dots for practical .300 BLK shooting
• Quality mounts matter as much as the optic itself

The .300 Blackout round sits in a unique spot - able to run whisper-quiet with subsonic ammo or pack a punch with supersonics. This split personality demands optics that can handle both worlds. Military trainers often point out that the right glass can double your effective range with this cartridge - but the wrong choice might leave you struggling with holdovers and sluggish transitions.

What Makes .300 Blackout Different?

The .300 AAC Blackout (7.62×35mm) was designed to solve specific problems that the 5.56mm NATO round couldn't address. It gives AR platform shooters the ability to use .30 caliber projectiles without changing magazines, lowers, or bolt carrier groups. You just need a new barrel and gas system. This makes it incredibly convenient for those who already own an AR-15.

But what truly sets the .300 Blackout apart is its dual-purpose nature:

• Supersonic loads (typically 110-125 grain) travel at around 2,215 fps and deliver about 1,360 ft-lbs of energy. They are great for hunting and defensive use out to 300 yards.
• Subsonic loads (typically 220+ grain) stay below the sound barrier at around 1,010 fps, delivering 498 ft-lbs of energy. They are ideal for suppressed shooting at shorter ranges.

This performance split creates a unique challenge for optics. Your sight needs to work well for both slow, arcing subsonic bullets and flatter-shooting supersonic rounds. .300 Blackout is optimized for short barrels (around 9 inches), while 5.56 gains velocity with longer barrels — typically 14.5 to 20 inches — but doesn’t require a full 20 inches for good performance. 

How to Choose Optics for .300 BLK

What magnification range works best?

Most .300 Blackout shooting happens between 25-300 yards. For this range, three options stand out:

• 1-6× LPVOs give you both close-quarter speed and mid-range precision
• Fixed 3-4× prisms offer a lightweight middle ground
• 3-9× hunting scopes work great for supersonic-only applications

Do you need a .300-specific reticle?

Yes! The drop difference between subsonic and supersonic ammo is massive. The best .300 BLK optics offer:

• Dual ballistic drop compensators (BDCs)
• Separate ranging marks for each load type
• Or quick-switch zero profiles for different loads

Standard mil-dot or MOA reticles can work, but you'll need a dope card to track your holds.

What about night vision compatibility?

For home defense or tactical use, NV compatibility matters. Look for:

• Low-NV illumination settings
• IR-compatible coatings
• Battery-free options (like fiber/tritium ACOGs)

Weight and size considerations?

On a short-barrel rifle or AR pistol, weight balance is crucial. Heavier optics make your gun front-heavy and slower to point. Shorter barrels also mean less sight radius, so mounting positions become critical.

Zeroing approach?

Most experts recommend:

• 50- or 100-yard zero for supersonic loads (depending on barrel length and ammo), then confirm actual trajectory with your specific setup.
• 50 yard (or closer) zero for subsonic
• Document your shift between load types

The .300 Blackout deserves thoughtful optic selection - let's look at our top picks.

7 Best .300 Blackout Scopes and Optics

1) Trijicon ACOG TA31-C .300 BLK (4×32)

The Trijicon ACOG 4×32 .300 BLK (model TA31 series) is a combat-proven fixed-power optic . One side of the reticle handles supersonic rounds out to 600 yards, the other tracks subsonic rounds to 200 yards. No need for batteries - the reticle glows thanks to fiber optics during the day and tritium at night.

This optic survived two decades of combat deployment with US forces. Its forged aluminum housing shrugs off impacts that would destroy lesser optics. The glass clarity is exceptional, giving you a crisp sight picture even in challenging light conditions.

For practical use, the ACOG shines in the 50-300 yard range where the .300 Blackout performs best. The Bindon Aiming Concept (both-eyes-open shooting) helps you maintain situational awareness. The battery-free design means you'll never face a dead reticle when you need it most.

Price:  $1,815

Specs

• Magnification: 4×
• Objective: 32 mm
• Illumination: fiber optic + tritium (no batteries)
• Eye relief: 1.5 inches
• Field of view: 36.8 ft @ 100 yd
• Housing: Forged aluminum
• Waterproof: 100 meters

Features

• .300 BLK BDC with separate subsonic/supersonic holdovers
• Combat-proven durability with minimal moving parts
• Auto-adjusting reticle brightness
• Fixed parallax set for combat distances

Pros

• Zero maintenance; no batteries needed
• Extremely tough; proven through combat
• Clear glass with excellent light transmission
• BDC handles both load types

Cons

• Premium price point
• Fixed 4× (not ideal for room-clearing)
• Shorter eye relief than variable optics
• Learning curve for the reticle system

2) Primary Arms SLx 3X MicroPrism (ACSS Raptor 7.62×39/.300 BLK)

The Primary Arms SLx 3X MicroPrism packs serious optical performance into a package the size of a compact red dot. At just 8 ounces, it weighs less than many red dots plus magnifiers, yet delivers fixed 3× magnification with an etched ACSS Raptor reticle specifically calibrated for .300 Blackout ballistics.

What makes this optic special is the size-to-performance ratio. The etched reticle works with or without power - no dead battery fears. The ACSS Raptor reticle gives you ranging brackets, wind holds, and bullet drop compensation all in one clean sight picture. This optic fits perfectly on short barrel rifles and AR pistols where weight matters.

For supersonic .300 Blackout loads, the BDC provides quick holdovers to 600 yards. For subsonic use, you'll need to develop your own holds, but the hashmarks provide good reference points. The prism design also helps people with astigmatism who struggle with standard red dots.

Price: $335.99

Specs

• Magnification: 3×
• Length: 2.9 inches
• Weight: 8.3 oz
• Field of view: 31.5 ft @ 100 yd
• 13 illumination settings
• Eye relief: 2.72 inches
• Adjustment graduation: 0.5 MOA

Features

• ACSS Raptor reticle for .300 BLK/7.62×39
• Multiple mounting heights included
• Etched reticle visible without power
• Daylight-bright illumination

Pros

• Extremely compact and lightweight
• Works with/without battery power
• Crystal clear glass for the price
• Multiple mounting options included

Cons

• Tighter eye box than LPVOs
• BDC calibrated for supersonic loads; subsonic users should confirm their own holds using the etched stadia marks. 
• Fixed 3× limits extreme close-quarters use
• Learning curve for the ACSS reticle system

3) EOTech XPS2-300 (Holographic Weapon Sight)

The EOTech XPS2-300 is a specialized holographic sight with a .300 Blackout-specific reticle pattern. It features the standard EOTech 68 MOA outer ring for quick target acquisition, but adds two 1-MOA center dots calibrated for both supersonic and subsonic .300 Blackout loads.

This optic excels at rapid transitions between close and mid-range targets. The top dot serves as your 100-yard zero with supersonic ammo (or 300 yards with the second dot). With subsonic loads, the dots correspond to 50 yards and 150 yards. This dual-purpose design eliminates the need to rezero when switching between load types.

The XPS2-300 is compact (about 3.8 inches long) and uses a single cross-bolt clamp that covers a few rail slots — ideal for SBRs and AR pistols where space is limited. . The sight picture remains clear with both eyes open, and the holographic technology means the reticle stays on target regardless of eye position. Add a magnifier for extended range capabilities without losing your zero.

Price: $659

Specs

• Size: 3.8" × 2.1" × 2.5"
• Weight: 9.0 oz
• 20 daylight settings
• Adjustment increments: 0.5 MOA
• Battery: CR123 (approximately 1,000 hours)
• Water resistant to 10 feet
• Mount: Picatinny/Weaver

Features

• .300 BLK specific two-dot ballistic reticle
• Compatible with magnifiers
• Compact XPS2 form factor
• Standard screw-clamp mount (QD lever appears on EXPS models instead) 

Pros

• Fast target acquisition
• Dual ballistic dots for both ammo types
• Compact footprint
• Compatible with night vision models (XPS3)

Cons

• This specific model (XPS2) is not night vision compatible
• Needs magnifier for precision beyond 200 yards
• Shorter battery life than some competing red dots
• Premium price point

4) Leupold VX-Freedom 3-9×40 (Duplex)

The Leupold VX-Freedom 3-9×40 represents the classic American hunting scope: simple, effective, and extremely clear. For hunters using supersonic .300 Blackout loads, this scope delivers crisp images from dawn to dusk thanks to Leupold's excellent light management system.

What sets the VX-Freedom apart is its balance of clarity, weight, and cost. At just over 12 ounces, it adds minimal bulk to your rifle. The glass clarity beats many scopes costing twice as much, especially in low light when deer and hogs are most active. The standard Duplex reticle is intuitive - thick outer posts for quick acquisition, thin inner crosshairs for precise shots.

For .300 Blackout hunting applications with supersonic loads, this scope hits the sweet spot. The 3-9× range covers everything from brushy woods to open fields. The fixed parallax works well for typical hunting distances. The forgiving eye box helps when shooting from awkward positions in hunting scenarios.

Price: $250–$350 (variant/retailer dependent)

Specs

• Magnification: 3–9×
• Objective: 40 mm
• Tube diameter: 1 inch
• Eye relief: 4.2" (3×) / 3.7" (9×)
• Weight: 12.2 oz
• Length: 12.5 inches
• Adjustment: 1/4 MOA
• Parallax: Fixed at approximately 150 yards

Features

• Twilight Light Management System
• Waterproof, fogproof, and shockproof
• Scratch-resistant lenses
• Generous eye relief

Pros

• Excellent low-light performance
• Lightweight and rugged design
• Simple, effective reticle
• Lifetime guarantee

Cons

• No .300 BLK-specific BDC
• Limited for close-quarters use
• Model lineup changes periodically — verify the current VX-Freedom 3-9×40 variant that fits your needs. 
• Not ideal for subsonic loads without holdover data

5) Meprolight Foresight (Smart Reflex)

The Meprolight Foresight brings digital innovation to the .300 Blackout optics world. This smartphone-connected reflex sight can store up to 10 different zeroing profiles. They are perfect for switching between subsonic and supersonic loads. Simply tap the controls, and your zero changes to match your ammunition.

Beyond its profile-switching abilities, the Foresight offers a library of over 20 reticle options (5 can be active at once). Select the best reticle for your shooting scenario through the Bluetooth app. The sight also displays a digital compass and level to improve your shooting fundamentals. The wide viewing window gives you a clean sight picture with minimal obstruction.

For .300 Blackout users who regularly switch between load types, the Foresight eliminates the mental math of holdovers. Your supersonic zero becomes instantly available, then switches back to subsonic with a few button taps. The rechargeable battery uses standard USB-C cables, though this does mean you'll need to manage battery life.

Price: US $349–$450

Specs

• Magnification: 1×
• Window size: 33×20 mm
• Weight: 9.9 oz
• Power source: USB-C rechargeable
• Protection rating: IP67 (waterproof/dustproof)
• Size: 4.6" × 2.35" × 2.65"

Features

• Multiple zero profiles (ideal for switching ammo types)
• 20+ selectable reticle options
• Digital compass and level displays
• Bluetooth app connectivity
• Auto-brightness adjustment

Pros

• Quick switching between ammo zeros
• Flexible reticle library
• Built-in mount
• Digital shooting aids
• No tools needed for adjustments

Cons

• USB-C rechargeable only — no coin-cell backup, so plan regular charging cycles. 
• App dependency may not suit everyone
• Not focused on duty/combat redundancy
• Still relatively new technology

6) Bushnell AR Optics 1-4×24 (Drop Zone-223 BDC)

The Bushnell AR Optics 1-4×24 represents the entry point into Low Power Variable Optics (LPVOs) for .300 Blackout users. This affordable scope delivers the 1× quick-shooting capability of a red dot with the 4× precision needed for 200+ yard shots - all at a price that won't break the bank.

The glass clarity punches above its price class, with fully multi-coated lenses that transmit light well even in dim conditions. The Drop Zone BDC reticle was designed for 5.56/.223, but with a dope card noting the differences, it works for .300 Blackout supersonic loads. The exposed turrets make field adjustments quick when switching ammo types.

For new .300 Blackout shooters, this scope offers a practical learning platform. The 1-4× range covers most realistic .300 Blackout scenarios. The second focal plane design means the reticle stays the same size regardless of magnification - easier for beginners to use. The 30mm tube construction adds durability without excessive weight.

Price: $ 179.95

Specs

• Magnification: 1–4×
• Objective: 24 mm
• Tube diameter: 30 mm
• Focal plane: Second (SFP)
• Eye relief: 3.5 inches
• Field of view: 112–27 ft @ 100 yd
• Parallax: Fixed at 100 yards

Features

• Drop Zone-223 BDC reticle
• Exposed target turrets for quick adjustments
• Fast-focus eyepiece
• Fully multi-coated optics

Pros

• Very affordable entry to LPVOs
• Decent glass clarity for the price
• Simple, intuitive controls
• Good eye relief

Cons

• BDC not calibrated for .300 BLK
• Limited top-end magnification
• Basic reticle compared to ACSS options
• Heavier than prism alternatives

7) Primary Arms SLx 1–6×24mm FFP (ACSS Raptor 7.62×39/.300 BLK)

The Primary Arms SLx 1-6×24mm FFP combines the best features for .300 Blackout in one package. The first focal plane ACSS Raptor reticle is specifically calibrated for both subsonic and supersonic .300 Blackout loads, with clear holdovers out to 600 yards for supersonic and 225 yards for subsonic rounds.

Daylight-visible illumination (sufficient for most lighting conditions, though not as intense as top-tier LPVOs). . Crank it up to 6× and you have the precision for ethical hunting shots or steel challenge hits at extended ranges. The glass clarity stays consistent throughout the zoom range, with minimal distortion at the edges.

The FFP design means the reticle grows and shrinks with magnification changes. It keeps the holdover points accurate at any zoom level. This matters when taking quick shots without time to dial exact magnification. The scope includes tools for range estimation, wind holds, and moving target leads - all in an intuitive layout that becomes second nature with practice.

Price: US $399.99

Specs

• Magnification: 1–6×
• Focal plane: First (FFP)
• Tube diameter: 30 mm
• Reticle: ACSS Raptor .300BLK/7.62×39
• Illumination: 11 brightness settings
• Eye relief: 3.3-3.5 inches
• Field of view: 110.0-19.3 ft @ 100 yd
• Weight: 16.9 oz

Features

• ACSS Raptor reticle with BDC for subsonic and supersonic .300 BLK
• First focal plane design for consistent holdovers
• Daylight-bright illumination
• Aircraft-grade aluminum construction

Pros

• True 1× performance at low end
• Reticle specifically designed for .300 BLK
• Holds for both ammo types
• Excellent value for the features
• Lifetime warranty

Cons

• Heavier than prism or red dot options
• Some users report stiff magnification ring
• Learning curve for the full ACSS system
• Eye box tighter at 6× than premium LPVOs

Comparison Table: .300 BLK Optic Matchup

Model	Type	Mag	Weight (oz)	Sub/Super	Use Case
Primary Arms SLx 1–6× FFP	LPVO	1–6×	16.9	Both (separate holds)	All-purpose
EOTech XPS2-300	Holographic	1×	9.0	Both (dual dots)	CQB to mid-range
Trijicon ACOG TA31-C	Fixed prism	4×	15.0	Both (split BDC)	Duty / combat
PA SLx 3X MicroPrism	Fixed prism	3×	8.3	Mainly super	Lightweight builds
Meprolight Foresight	Smart reflex	1×	9.9	Both (profiles)	Tech-forward use
Leupold VX-Freedom	Hunting scope	3–9×	12.2	Mainly super	Hunting
Bushnell AR 1–4×	Budget LPVO	1–4×	16.0	Mainly super	Entry-level

Setup & Zeroing for .300 BLK

Getting your .300 Blackout optic properly set up makes all the difference in performance. Here's a straightforward approach:

Step 1: Know Your Setup

Confirm your barrel length, gas system type, and ammo details. A 9-inch barrel with supersonic ammo behaves differently than a 16-inch barrel with subsonic loads. Log these details for reference.

Step 2: Choose Your Primary Zero

For supersonic loads, a 50/200 yard zero works well (point of impact same at both distances). For subsonic loads, a 50-yard zero is typically best due to the steeper trajectory.

Step 3: Document Load Shifts

After zeroing with your primary load, fire a group with your alternative load (without adjusting the optic). Measure the shift in point of impact. This becomes your reference for quick field adjustments.

Step 4: Verify Your Holds

Confirm the reticle's holdover points at various distances: 25, 50, 100, 200, and 300 yards if possible. Make a small range card noting any differences between the reticle's designed holds and your actual results.

Step 5: Check Suppressor Effects

Installing or removing a suppressor usually changes point of impact slightly due to barrel harmonics and back-pressure. Record the consistent shift for each load so you can apply quick offsets. 

Step 6: Practice Transitions

If you switch between subsonic and supersonic regularly, practice the transition. With optics like the Meprolight, save separate zero profiles. With BDC reticles, practice using the correct holds for each load type.

This methodology helps you maximize your .300 Blackout's potential across its entire performance envelope. 

Conclusion

The .300 Blackout offers incredible flexibility—from whisper-quiet subsonic loads to hard-hitting supersonics—but maximizing its potential requires the right glass. Our top pick, the Primary Arms SLx 1-6×24mm FFP, delivers the best balance of features for most users, with specific holdovers for both load types.

For those prioritizing lightweight builds, the SLx 3X MicroPrism offers exceptional performance in a tiny package. Tactical users will appreciate the bombproof ACOG or the lightning-fast EOTech. Hunters can't go wrong with the clear, lightweight Leupold.

No matter which optic you choose, practice with both your primary and secondary load types. Document the shifts, learn your holds, and you'll squeeze every bit of performance from your .300 Blackout setup.

The strength of this cartridge is its flexibility and range of uses. With the right optic and setup, one gun can cover quiet home defense and medium-range hunting. Pick the glass that fits your main goal, then enjoy what makes the .300 Blackout special in daily use.

Before you hit the range, make sure your optic and rifle are properly aligned. A bore sight can make the difference between wasting ammo and confirming your zero in just a few shots. See our full guide on the Top 5 Best Laser Bore Sights of 2025 to help get you dialed in before your live-fire range day.

Frequently Asked Questions (FAQs)

What's the best magnification for .300 BLK SBRs?

For short-barrel .300 BLK builds, a 1-4× or 1-6× LPVO or a fixed 3× prism offers the ideal balance. You get true 1× for close work but enough magnification to reach out to 300 yards with supersonic loads.

Do I need a .300-specific reticle for subsonic ammo?

Yes, if you'll regularly use subsonic ammo. The trajectory difference between subsonic and supersonic is substantial. A .300-specific reticle with dual holds (like the ACSS Raptor .300 BLK or EOTech XPS2-300) saves you from memorizing different holdovers.

Should I zero with supers or subs if I shoot both?

Zero with whichever ammo type you'll use most often. If it's an even split, zero with supersonic and document the shift for subsonic. The flatter trajectory of supersonic makes it more forgiving for varying distances.

Is a magnifier worth it behind a holographic for .300 BLK?

Yes, especially with the EOTech XPS2-300. The magnifier lets you identify targets and make precision shots out to 300+ yards while keeping the speed advantages of the holographic sight for close work.

How far can I realistically use .300 BLK with these optics?

With supersonic loads and good glass, 300-400 yards represents the practical limit for most shooters. With subsonic loads, stay within 150-200 yards for ethical hunting shots or reliable defense use.

Will a suppressor change my zero and holds?

Almost always yes. The change in barrel harmonics and backpressure typically shifts point of impact. The shift is usually consistent, so document it once and you'll know what to expect.

FFP vs SFP for .300 BLK LPVOs—does it matter?

Yes, especially if you shoot at varying magnifications. First focal plane (FFP) reticles keep holdovers accurate at any magnification. SFP reticles are typically only calibrated at max magnification, requiring mental adjustment at lower powers.

Are prism optics better than red dots on a short .300 build?

For many shooters, yes. Prism optics offer etched reticles (work without power), usually have some magnification, and often help shooters with astigmatism who see starburst patterns with standard red dots.

About the Author

This article comes from the Pro Armory writing team. We used current research to guide every line. Our sources include the Journal of Military Science, Firearms News, and the National Shooting Sports Foundation. We also used official defense publications. And we checked respected firearm authorities such as the ATF, the NRA, and manufacturer manuals. 

Disclaimer: This article is for education only. It is not professional advice. You should make all optics choices with local laws and regulations in mind. Pro Armory does not guarantee the accuracy of any specification. Makers can change details, and updates may happen. Always follow all firearm safety rules.