This model attaches to the weapon via a patented muzzle brake and an adapter that goes over the barrel for silencer alignment. When fired without the suppressor the muzzle brake effectively reduces recoil and muzzle climb while diverting muzzle gasses slightly forward, away from the shooter. The muzzle brake design eliminates upward and downward blast while reducing muzzle flash. The suppressor mounts via threads on the outside of the muzzle brake centering on the adapter fitting. A 20 degree taper on the adapter locks the silencer onto the barrel.
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Note: This suppressor was tested by Crane on an HK21, by firing 1400 rounds in 15 minutes with no degradation in performance. Machine gun suppressor pricing is based on customer providing the applicable weapon and 100 rounds of linked ammo per suppressor for testing of each unit before shipment.