This is a semiautomatic bolt system for the German MP-40 and will also work with the FBP. This kit has a skill rating of 4 out of 5. The builder will have to engineer their own disconnector and sear for this to work as the original guns did not have them. The sear location and safety hook location may have to be relocated.
The bolt will accept an original extractor and cocking handle for an authentic look. This kit includes the following high quality American made parts: a semiauto bolt, standard AR-15 firing pin, roll pin, firing pin spring, bolt stop, guide rods, 2 sets of springs, and assembly instructions.
This design is based on our ATF approved STEN MK3 model. Other US made parts may be needed to be compliant with GCA 18 U.S.C. 922r.