Heckler & Koch Flash Hider 22 Cal - Flash Hider 22 Cal 15x1rh Steel Black

Dead Air KeyMicro Flash Hider 1/2-28, Black - Compact Flash Hider for Reduced Muzzle Flash - DA115

HK USP 9mm Metric Thread Protector, Black - 207330

H&K Thread Protector M16x1mm RH Fits H&K MK23, Black

Heckler and Koch Thread Protector USP-T .45ACP

HUXWRX QD Flash Hider 6mm AR-15 5/8-24 Thread Black

Heckler and Koch HK45 Treaded Barrel 5.2 M16x1 LH

Heckler and Koch HK45C Threaded Barrel 4.57 M16x1LH