MP5 SD 115 Degree locking piece new. Correct for most MP5 SD and clones.Made by RCM, Rim Country MFG. Machined in the USA.
RCM MP5 SD HIGH TEMP SILICONE O-RING
MP5K SP5K RECOIL SPRING NEW
RCM MP5 SD LOCKING PIECE, 120 DEGREE
HK91 G3 BOLT HEAD NEW - STRIPPED - U.S.