USP Barrels

O-Ring for .45 caliber barrels HK introduced O-rings with the HK Mark 23 and HK USP 45 Tactical pistols. Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal...

HKP HK .45 Barrel O-Ring All Caliber Pistols - Red A rare find as we have found a small lot of HK red-colored HK .45 O-rings.  All HK O-rings are still made of the same material as the newer black O- rings only in the HK red color. A great spare and...

HK German 9mm barrel O-ring - Green For thread protector or barrel slot on the Elite barrel. The o-ring is a high wear and replacement item. Stock up at the lowest price in the country. To save even more order 10 or more and get an additional $1 off per...

Heckler and Koch .45 ACP Caliber Barrel O-Ring in Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...

H&K 9mm Thread Protector - Threaded 13.5x1 LH This German HK manufactured 9mm tactical threaded barrel protector fits all HK 9mm threaded barrels that are 13.5x1 metric LH twist.  Specifications: Overall Length .45" Outside Diameter ...

HK German 9mm Barrel O-ring The O-ring is a high-wear and replacement item. To save money - order 10 or more and get an additional $1 off per O-ring. Compatible with: HK 9mm barrels with O-ring groove HK USP, USP Compact, USP Tactical 9mm HK USP Elite...

H&K .45 ACP Thread Protector - Threaded 16x1 LH The cap fits all HK45 full size & compact barrels threaded 16x1 LH hand thread. A must have item to protect your threaded barrels, exposed threads, and your HK pistol investment. The use of the...

HKP .45 ACP Thread Protector - Threaded 16x1 LH This .45 caliber thread protector fits all full-size and compact barrels with 16x1 LH threads. Made in the USA from stainless steel with a nitride finish, it's essential for protecting your threaded barrels...

O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...

HKP 9mm Thread Protector - Threaded 13.5x1 LH   This standard thread protector is perfect as a replacement or backup. It fits 9mm barrels with 13.5x1 LH threading.   Specifications: Threaded 13.5x1 LH Compatible With: HK VP9, VP9T, VP9SK,...

HKP (9mm) Thread Protector For Barrels - Threaded 1/2x28 A must-have accessory to safeguard the threads on your threaded barrel, this thread protector is the finest available. It is the standard thread protector included with all HKPARTS threaded pistol...

HKP HK 9mm Enhanced Thread Protector - Threaded 1/2x28 RH   This enhanced thread protector is crafted from stainless steel and designed for 1/2x28 threaded barrels. Its unique design not only fits over and protects the crown of your barrel but...