Expo Arms/FCD Extended Single Chamber Muzzle Brake - Dead Air Keymo Mount - 1/2x28

Manufactured by Expo Arms
SKU: XP-1215KM
MPN: XP-1215KM
Manufactured by Expo Arms
3 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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Working with Expo Arms, the Forward Controls Design XP-1215KM has been designed from the ground up  to provide your favorite Dead Air KeyMo compatible suppressor with a life-extending sacrificial baffle while also functioning as an effective single-chamber muzzle brake when not being used as a suppressor host. The XP-1215KM features a .30 caliber bore helping to reduce noise and concussion with flat side ports that don't direct gas towards the shooter or bystandards behind the shooter. The XP-1215KM has been lengthened, allowing it to serve as a permanent host on 13.9" barrels to reach 16" minimums. Machined from high-strength 4140 chrome molybdenum steel with a tough black-nitride finish, the XP-1215KM is a rock-solid choice for your next suppressor host.

  • 2.7" Overall length
  • Pin and weld to 13.9" barrels to meet 16" requirements
  • 1/2x28 threaded for 5.56/.223
  • .30 cal bore to reduce blast
  • 4140 steel
  • Properly heat treated
  • Salt bath nitride finish
  • Effective recoil reduction
  • Compatible with DeadAir KeyMo Suppressors

Expo Arms offers top-quality MIL-SPEC AR-15 components at rock bottom prices. Made in the U.S.A. and covered by Expo’s Limited Lifetime Warranty against manufacturer defects, material or workmanship problems, and even normal wear and tear!
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BrandExpo Arms
Caliber Gauge.22 Cal
MaterialSteel - 4140 Chrome Moly
Suppressor MountDeadAir KeyMo
Thread Pattern1/2 X 28
TypeMuzzle Brake
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 www.P65Warnings.ca.gov.

Ratings & Reviews

3 reviews

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Admittedly bought it from forward controls because it hadn’t released here. Absolutely love this brake. It sits on a mk12 clone build. I emailed DA about 3 months before this came out and stoked that someone did this.

Quality Piece of Kit


Just received this Expo Arms / FCD muzzle device and installed it today. First would like to note that when torqued to spec on my barrel, no shims we’re needed as the device properly indexed off the bat! Second, the quality of materials and finish seem to be on par with Dead Air’s own devices. Third I’d like to state that the overall length of this device makes it cross-compatible with both Dead Air’s KeyMo and KeyMicro mounting systems! Will be putting a lot of rounds through this device in the future to see how it will hold up.

Great product

by -

Got me to 16inches from 13.7 My build is mostly FCD parts figured if Roger paired with expo arms the product is GTG!