Guys - I've hit a wall with my full auto .22 conversion and could use some advice. My setup is as follows:
Sp-1 RR with CMMG stainless .22 FA conversion using their sear trip and anti-bounce weight. 4.5" CMMG .22 upper with and without suppressor.
The setup runs fine in semi, however I can never get more than 3-4 round burst in FA with a light rim strike on the last round and hammer down.
I've spent a lot of time going researching .22 full auto issues online. These are the tweaks I have tried:
High and hyper velocity ammo - CCI mini mags, Stingers, Remington Golden, Yellow jackets, ect
Several types of Black Dog and CMMG mags
TACCOM plug
Mil-spec and Geiselle SSF triggers
Lakeside recoil and trigger springs - trimmed recoil spring.
Fitted sear/hammer engagement.
Any help is appreciated.