Description
Ask anyone who runs a short-barreled .300 Blackout what they want out of a suppressor and the answer is usually the same: make the subsonics whisper quiet and don't fall apart when the supers come out. That is exactly the job the SOCOM300-SPS was built for. This is the quietest suppressor in SureFire's entire lineup, and it carries the same design DNA that won the brutal US Special Operations Command suppressor trials. The V-shaped baffle stack is tuned specifically for subsonic ammunition, pulling .300 BLK subs down to roughly 120 dB at the muzzle while killing first-round flash and dust signature almost entirely.
Built Like Military Hardware, Because It Is
The SOCOM300-SPS 2nd Gen is CNC laser-welded from Inconel and stainless steel, with a solid Inconel blast baffle up front where the abuse happens. It is full-auto rated and finished in Ionbond and Cerakote matte black, so it shrugs off heat and hard use. The bore is intentionally oversized and precision machined, which cuts down the chance of a baffle strike from projectiles that have not fully stabilized out of a stubby barrel. At 7.9 inches long, 1.5 inches in diameter, and around 20 ounces, it adds real suppression without turning your carbine into a boat oar.
Fast-Attach Mounting That Repeats Every Time
SureFire's patented Fast-Attach system locks the can onto any SOCOM-compatible SureFire muzzle device without tools, and a precision indexing system means it seats the same way on every attach and detach cycle. Point of impact shift stays minimal and consistent, and every SOCOM300-SPS is test-fired at the factory to verify sub-1 MOA performance. Keep a mount on each rifle and one can covers your whole safe, since it is rated from 5.56mm all the way up to .300 Win Mag.
Who the SOCOM300-SPS Makes Sense For
If your primary host is a .300 BLK pistol or SBR with a 10 inch or shorter barrel, this is the can that setup deserves. Hunters running subs, home defense builds, and anyone chasing the quietest possible Blackout experience will be hard pressed to do better. Made in the USA and backed by SureFire's reputation for gear that goes to war.
Key Specifications
- Manufacturer: SureFire
- Model: SOCOM300-SPS (2nd Gen)
- Manufacturer Part Number: SOCOM300-SPS-BK
- UPC: 084871324540
- Primary Caliber: .300 AAC Blackout (subsonic and supersonic)
- Caliber Rating: 5.56mm up to .300 Win Mag
- Overall Length: 7.9 inches
- Diameter: 1.5 inches
- Weight: Approx. 20 oz
- Construction: Inconel alloy and stainless steel, CNC laser-welded
- Finish: Ionbond/Cerakote matte black
- Mounting System: SureFire Fast-Attach quick detach
- Full-Auto Rated: Yes
- Baffle Design: V-shaped baffles optimized for subsonic ammo
- Country of Origin: USA
What’s Included
- SureFire SOCOM300-SPS 2nd Gen suppressor
- FirstSpear MOLLE carry pouch
- Cleaning brush
Frequently Asked Questions
Do I need a separate muzzle device to mount the SOCOM300-SPS?
Yes, the mount is not included in the box. The SOCOM300-SPS attaches to SureFire's SOCOM-compatible Fast-Attach muzzle devices, including their flash hiders, muzzle brakes, and WARCOMP models. Pick up a mount for each host rifle and the can swaps between them in seconds without tools.
How quiet is the SOCOM300-SPS with subsonic .300 Blackout?
This is the quietest suppressor SureFire makes, and independent testing backs that up. With subsonic .300 BLK it brings muzzle readings down to around 120 dB, which is why so many people pair it with 8 to 10 inch Blackout builds. With supersonic loads it stays comfortable at the ear while also cutting first-round flash almost completely.
Can I use the SOCOM300-SPS on my 5.56 or .308 rifles too?
You can. While the baffle stack is tuned for .300 Blackout, the can is rated for everything from 5.56mm up to .300 Win Mag, so it will happily do double duty on a 5.56 carbine or a .308 bolt gun. Just make sure each host wears a SOCOM-compatible SureFire mount.
Is the SOCOM300-SPS 2nd Gen rated for full-auto fire?
It is. The Inconel baffle stack, solid Inconel blast baffle, and CNC laser-welded stainless construction come straight from SureFire's military suppressor program, the same design family that won the SOCOM suppressor trials. It is built for sustained hard use, not just weekend range trips.



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