Description
SureFire calls the SOCOM300-SPS the quietest suppressor in their entire lineup, and that claim is aimed squarely at .300 Blackout. The V-shaped baffle stack inside this can was designed from the ground up for subsonic ammo, which is exactly where the .300 BLK cartridge shines. Hang it on a carbine with a 10 inch or shorter barrel, load up some heavy subs, and the loudest thing you'll hear is the bolt cycling. It handles supersonic loads just fine too, and it's fully capable on 5.56 hosts if you want one can pulling double duty.
Built From the Same DNA That Won the SOCOM Trials
This suppressor carries the design lineage that earned SureFire its win in the US Special Operations Command suppressor trials, and the construction backs it up. The body is Inconel alloy and stainless steel, CNC laser-welded, with an Inconel blast baffle that shrugs off heat and full-auto abuse. The bore is slightly oversized but precisely machined, which cuts down the odds of a baffle strike from a less-than-stable projectile. Internal venting reduces back pressure, gas blowback, and cyclic rate, so you get less gas in your face and a cooler-running gun. It also kills first-round flash, cutting visible signature by up to 99.5 percent. Every SOCOM300-SPS is test-fired at the factory to verify sub-1 MOA groups and point-of-impact shift before it ships.
Fast-Attach Mounting on the SOCOM300-SPS Gen 2
SureFire's Fast-Attach system locks this can onto any SOCOM-compatible SureFire muzzle device in seconds, no tools required, and it indexes the same way every single time. That means minimal, repeatable POI shift no matter how many times you pull it off and put it back on. At 7.9 inches long, 1.5 inches in diameter, and right around 20 ounces, it adds meaningful suppression without turning your SBR into a pool cue. The Flat Dark Earth Ionbond and Cerakote finish is built to take a beating. Just remember you'll need a SureFire SOCOM-series muzzle device on your host, sold separately.
Key Specifications
- Manufacturer: SureFire
- Model: SOCOM300-SPS Gen 2
- Manufacturer Part Number: SOCOM300SPSDE
- UPC: 084871324557
- Caliber: .300 AAC Blackout (also rated for 5.56mm)
- Overall Length: 7.9 in
- Diameter: 1.5 in
- Weight: 20 oz
- Construction: Inconel alloy and stainless steel, CNC laser-welded
- Baffle Design: V-shaped baffles optimized for subsonic ammo
- Mounting System: SureFire Fast-Attach quick detach
- Finish: Flat Dark Earth Ionbond and Cerakote
- Full-Auto Rated: Yes
- Made In: USA
What’s Included
- SureFire SOCOM300-SPS Gen 2 suppressor
- FirstSpear MOLLE pouch
- Cleaning brush
Frequently Asked Questions
Do I need a special muzzle device to run the SOCOM300-SPS Gen 2?
Yes. This can uses SureFire's Fast-Attach system, so your host rifle needs a SOCOM-compatible SureFire muzzle device such as a flash hider, muzzle brake, or WARCOMP. The adapter is sold separately, so factor that into your build. Once installed, the suppressor locks on and off in seconds without tools.
Can I shoot supersonic .300 BLK or 5.56 through the SOCOM300-SPS?
Absolutely. While the baffle design is optimized for subsonic .300 Blackout, it handles supersonic Blackout loads without issue and is fully capable on 5.56mm hosts. The oversized, precision-machined bore also reduces baffle strike risk from unstable projectiles.
How quiet is the SOCOM300-SPS with subsonic ammo?
SureFire rates this as the quietest suppressor in their entire family, and it was purpose-built for .300 BLK carbines running 10 inch or shorter barrels. With heavy subsonic loads, the action cycling is often the dominant sound at the shooter's ear. It also virtually eliminates first-round flash, suppressing visible flash by up to 99.5 percent.
Will attaching and removing the suppressor change my zero?
SureFire's Fast-Attach system indexes the same way every time, so point-of-impact shift stays minimal and consistent across attach and detach cycles. Every SOCOM300-SPS is factory test-fired to verify sub-1 MOA group size and POI shift before it leaves the plant. Confirm your zero once with the can mounted and you're set.


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