HK BARREL O-RING – .45 ACP

Replacement O-Ring for all HK .45 Caliber Pistols.  O-Ring will work in the following models:

• USP 45, USP 45 Tactical, USP 45 Elite
• USP Compact 45, USP Compact 45 Tactical
• HK45, HK45 Tactical
• HK45 Compact, HK45 Compact Tactical
• HK Mark 23