Forward Controls Design Stoner 63 Style Compensator - Dead Air Keymo Mount - 1/2x28

Manufactured by Forward Controls Design
SKU: 6315KM
MPN: 6315KM
Manufactured by Forward Controls Design
5 Reviews

In Stock

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Effective flash suppression, reduced muzzle rise, an integrated wire cutter feature, and a slick, no frills design come together in the 6315. Machined from incredibly durable 4130 bar stock steel, the effective flash hider provides a noticeable improvement on the traditional A2 flash hider in both flash suppression and muzzle rise compensation, without increasing muzzle blast. A slick nitride finish protects it from corrosion to give you a long lasting and durable option for your rifle.

  • 1/2x28 threaded for 5.56/.223
  • 4130 steel bar stock
  • Properly heat treated
  • Salt bath nitride finish
  • Effective flash suppression
  • Effective muzzle rise compensation
  • Compatible with DeadAir KeyMo Suppressors
  • Integrated wire cutting feature
  • Drilled for pinning and welding

The effective design of the 6315 draws inspiration from the muzzle device found on Stoner 63 -itself an improvement on the A2 flash hider - but modernized and tweaked for superior performance. By shortening and narrowing the side ports, muzzle rise reduction has improved and the increased real estate at the muzzle end has allowed the inclusion of wire cutter notches at 3 and 9 o'clock positions. The impressive suppression capabilities combined with the lightweight and small design are proof that larger muzzle devices aren't necessarily better. Simple, clean, and effective, the 6315 is an excellent option for your next AR-15 build.

Forward Controls Design firmly believes in the elegance of simplicity. Not content to produce purely aesthetic components, they put function before form to create parts and accessories that actually improve the handling and function of your firearms. When you need parts that just work without complication, you need Forward Controls Design.
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BrandForward Controls Design
Caliber Gauge.22 Cal
MaterialSteel - 4130 Chrome Moly
Suppressor MountDeadAir KeyMo
Thread Pattern1/2 X 28
TypeFlash Hider
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

5 reviews

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Awesome Dead Air Alternative

by -

Really impressed with FCD. Was looking for a different Keymo mount that the standard DA flash hider and comp and stumbled in this. The A2ish style is a nice change from everything else I use. The machining and finish on mine was nearly perfect and uniform. Mounting was super easy with Precision Armament Accuwashers. My Sandman ratchets on just like it should and while it isn't quite as tight as my DA muzzle devices its certainly tight enough. Flash suppression is fine and no annoying concussive blast. I'll be buying more for future builds for sure.

Love the shorter profile...


For a new build, I needed a Dead Air flash hider, but the OEM model wasn't available. So, I'm inpatient and I took a shot ordering this ½-28 version.

So far so good. Looking to get the ⅝-24.version.

Great product but…


Awesome product. Birdcage style flash hider with keymo adapter, but not a 5.
Why? Forward control decided to cheap out and not give you shims.

High Quality

by -

Works with the keymo system on my DA Sandman and the machining is high quality. Recoil compensation is as expected, low muzzle blast, and I do enjoy the Stone 63 look. The negative . . . as mentioned in other reviews, FCD did not provide timing shims.

Objectively Great


I wanted a flash hider over a brake that I could still mount my suppressor if desired. On a 12.5” 5.56 barrel with midlength gas this thing performed the same rise/recoil-wise without the concussion/loudness/flash/violence of a muzzle brake/compensator (without the suppressor mounted). I took my first shot and it was like shooting a .22 perception-wise and I was genuinely taken aback and found the shooting experience to be so much smoother. I’d never go back to a brake for this gun after using this. Flashhiding is not something I was able to really “test” during the day but I had no feedback from the muzzle in my optic or in my other eye. Just a typical bang sound and dirt flying on the berm and the optic just stayed right there. I don’t leave reviews neurotically on every product. So this is how impressed I am with FCD’s modification of the basic A2 flash hider to also operate as a comp and suppressor mount. SAH-lid. Buy it.