US 12,169,109 B2
Firearm accessories and attachment systems
Mario Krnežić, Ozalj (HR)
Assigned to HS Produkt D.O.O., Karlovac (HR)
Filed by HS Produkt D.O.O., Karlovac (HR)
Filed on Feb. 18, 2022, as Appl. No. 17/651,663.
Prior Publication US 2023/0266089 A1, Aug. 24, 2023
Int. Cl. F41A 21/32 (2006.01); F41A 21/36 (2006.01)
CPC F41A 21/325 (2013.01) [F41A 21/36 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A muzzle attachment for a firearm, said muzzle attachment comprising:
an attachment body having an inner surface defining a longitudinal bore extending along a central axis of the muzzle attachment, said attachment body having a threaded portion for engaging a threaded portion of the firearm and a vent opening arranged to vent propellant gases away from the longitudinal bore along a direction transverse to the central axis;
a lock mounted to said attachment body and configurable from a retracted configuration to an extended configuration; and
a spring biasing the lock towards the extended configuration;
wherein in the retracted configuration the lock has a first portion positioned a first distance from the central axis;
wherein in the extended configuration when the muzzle attachment is attached to the firearm the first portion is positioned a second distance from the central axis and engages a portion of the firearm so as to resist removal of the muzzle attachment from the firearm;
wherein said muzzle attachment has an upper portion and a lower portion relative to the firearm and as defined by a horizontal plane extending along the central axis, said horizontal plane orthogonal to a vertical plane extending through said central axis and a trigger of the firearm; and
wherein the vent opening of the muzzle attachment is on the upper portion and the lock is on the lower portion.