RCM MP5 Roller Set +4

RCM U.S. Made +4 (8.04 mm) locking roller, The proper roller size is essential for proper bolt gap. Sold as a set

Fits all:

• HK G3, 91 & PTR
• HK 93, 33, 53
• HK MP5, 94
• HK MP5K, SP89, SP5K
• Other 90 series custom builds or clones