RCM HK STYLE MP5 9MM F/A BOLT CARRIER

MP5 40, MP5 10mm Trunion Made to exact factory HK specifications for the HK MP5, 40/10mm trunion type builds. Machined completely from ordnance grade steel and heat treated to factory specs. Each has the bullet guides pre installed the correct way like brand X that fall out. These are the best made trunions on the market. Machined to HK spec making the install painless and hassle free. The way a custom HK build it should be!