Dead Air Silencers KeyMo QD Suppressor Muzzle Brake - 45 Caliber, 11/16x24, Black Nitride Finish - SKU: DA163 - UPC: 810128161572
Product Description
The Dead Air Silencers KeyMo QD Suppressor Muzzle Brake (DA163) is a precision-engineered recoil control and quick-detach suppressor mounting solution designed for .45 caliber big-bore rifles and carbines. Threaded in 11/16x24 TPI, this muzzle brake allows shooters to attach KeyMo-equipped suppressors (such as the Dead Air Primal, Ghost, or KeyMo adapter systems) with a simple, solid one-handed ratcheting motion.
Precision-machined from high-grade alloy steel and treated with a corrosion-resistant black nitride finish, the DA163 features dual port side brakes that significantly flatten muzzle rise and reduce felt recoil when firing heavy .45-caliber projectiles. When unsuppressed, the brake acts as an effective recoil reducer; when suppressed, the internal baffle geometry doubles as a protective sacrificial baffle, shielding your silencer’s primary blast chamber from high-velocity erosion.
The DA163 includes a timing shim kit for precise index alignment on your barrel shoulder, guaranteeing consistent shoulder seating and perfect concentricity for maximum suppressor alignment and zero point-of-impact shift.
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Threaded 11/16x24 TPI for .45 caliber bores (e.g., .450 Bushmaster, .45-70 Govt, .458 SOCOM, etc.). Mounts all Dead Air KeyMo / Key-Micro compatible suppressors and adapters.
- Verify host firearm is completely clear, magazine removed, safety engaged, and chamber visually and physically confirmed empty.
- Clean barrel threads thoroughly and test-fit shims to determine proper timing orientation for side braking ports.
- Apply a high-temperature thread-locking compound (Rocksett recommended) to the clean barrel threads.
- Thread the DA163 onto the barrel shoulder and torque to 25-30 ft-lbs using a properly fitted wrench.
- Allow thread locker to cure per manufacturer instructions before attaching your KeyMo suppressor for range staging.
Key Features
- KeyMo QD System Compatibility: Provides fast, rock-solid, one-handed ratcheting attachment for KeyMo suppressors.
- Big-Bore .45 Caliber Design: Oversized bore clearance engineered specifically for .450 Bushmaster, .45-70, and .458 SOCOM barrels.
- Effective Recoil Mitigation: Dual-port brake profile drastically reduces rearward felt recoil and muzzle climb.
- Sacrifical Baffle Protection: Diverts harsh blast gases to extend the service life of your silencer's blast chamber.
- Black Nitride Finish: Ultra-hard surface treatment delivers extreme resistance to friction, heat, and carbon fouling.
- Included Shim Kit: Comes complete with a multi-thickness timing shim pack for perfect index leveling.
Product Specifications
- Brand: Dead Air Silencers
- MPN: DA163
- SKU: DA163
- UPC: 810128161572
- Caliber Bore: .45 Caliber
- Thread Pattern: 11/16x24 TPI
- Attachment System: Dead Air KeyMo / Key-Micro QD
- Material: Alloy Steel
- Finish/Color: Black Nitride
- Country of Origin: Made in USA
