Thanks for the input
Thanks to all who took the time to reply! This is more of a "see if it can be done" project for me. I am trying to adapt a seekins precision upper / gen 2 lower to piston operation (billet construction, ambidextrous bolt release, and it looks cooler).I have a couple 416 uppers and spare parts as well as lwrci rifles/parts. Having studied the retrofit piston systems, I've found them all lacking compared to lwrci and HK, so when I wanted to build my own piston gun, it was a natural choice for me to try to adapt one of these to my own upper. The HK was my first choice due to the firing pin safety system / no lite primer strikes and the beefier gas block. However, as several above have printed out, HK modified the receiver (beyond the piston channel, which is enlarged and incorporates a stainless steel insert, just like LWRCI) to include an indexing notch for the rail system. LWRCI uses a standard upper (with the piston channel). I'll post the progress...
Thanks to all who took the time to reply! This is more of a "see if it can be done" project for me. I am trying to adapt a seekins precision upper / gen 2 lower to piston operation (billet construction, ambidextrous bolt release, and it looks cooler).I have a couple 416 uppers and spare parts as well as lwrci rifles/parts. Having studied the retrofit piston systems, I've found them all lacking compared to lwrci and HK, so when I wanted to build my own piston gun, it was a natural choice for me to try to adapt one of these to my own upper. The HK was my first choice due to the firing pin safety system / no lite primer strikes and the beefier gas block. However, as several above have printed out, HK modified the receiver (beyond the piston channel, which is enlarged and incorporates a stainless steel insert, just like LWRCI) to include an indexing notch for the rail system. LWRCI uses a standard upper (with the piston channel). I'll post the progress...