Patent ID: 9739560
Date: 2017-08-22
CPC Classifications: F41A

Claim:
1. A system for attaching an accessory to a firearm, comprising: a muzzle device configured for attachment to the muzzle end of a barrel of the firearm, the muzzle device having a first engagement means and one of an annular grooved surface and a grooved surface engagement mechanism; and an adapter device including: wherein the first engagement means and the second engagement means cooperate to releasably secure the adapter device to the muzzle device; wherein the biasing mechanism is configured to axially bias the retainer ring away from the forward portion of the adapter and towards the one of the annular grooved surface and the grooved surface engagement mechanism of the muzzle device so that the one of the annular grooved surface and the grooved surface engagement mechanism of the muzzle device engages the other of the annular grooved surface and the grooved surface engagement mechanism of the retainer ring; and wherein the retainer ring includes a plurality of lugs extending radially inward from an inner surface of the retainer ring; and the rearward portion of the adapter includes a plurality of channels configured to receive the lugs of the retainer ring.