US 11,732,989 B2
Mounting and retention assembly for suppressors
Krzysztof J. Kras, Fremont, NH (US); and Lindsay Lee Bunch, Deerfield, NH (US)
Assigned to Sig Sauer, Inc., Newington, NH (US)
Filed by Sig Sauer, Inc., Newington, NH (US)
Filed on May 7, 2021, as Appl. No. 17/314,132.
Claims priority of provisional application 63/024,054, filed on May 13, 2020.
Prior Publication US 2021/0356225 A1, Nov. 18, 2021
Int. Cl. F41A 21/32 (2006.01); F41A 21/30 (2006.01)
CPC F41A 21/325 (2013.01) [F41A 21/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mounting assembly for a muzzle accessory and a muzzle adapter, the muzzle adapter having an adapter body with male threads and an axially extending bearing surface located proximally of the male threads, and the muzzle accessory having an accessory mount with an outside surface defining male threads and an inside surface defining female threads corresponding to the male threads on the muzzle adapter, the mounting assembly comprising:
a locking nut extending along a central axis from a proximal end to a distal end, the proximal end defining a central proximal opening and the distal end defining a central distal opening, the locking nut having an inside surface with female threads and an inside taper located proximally of the female threads of the locking nut, the female threads of the locking nut corresponding to the male threads on the outside surface of the accessory mount, wherein the inside taper extends circumferentially along an inside of the locking nut and reduces in radius moving axially rearward towards the proximal end of the locking nut; and
a locking ring having a radially inner face extending axially and configured to engage the axially extending bearing surface on the muzzle adapter and having a radially outer face that includes an outside taper defined by an axially sloping change in radial thickness between the radially inner face and the radially outer face, the outside taper configured to engage the inside taper of the locking nut;
wherein in an assembled state in which the accessory mount threadably engages the muzzle adapter, the locking nut is configured to be threaded onto the accessory mount with the radially inner face of the locking ring engaging the axially extending bearing surface on the muzzle adapter and the outside taper of the locking ring engaging the inside taper of the locking nut.