I've been away from this site for 10 years so don't bash me if this is old news. I have a dpms recon gen2 .308 that runs perfect with my rdias. The smaller g2 frames are perfect for the Dias and m16 fire control. I think my rdias just went up to 30k. I've got hosts for 5.56, 9mm lonewolf lower, 9mm colt, 300 blackout, .22 and .308 now. I hope the cmmg mutant will take the sear too so I can have a reliable 7.62x39. Is the shrike belt fed system reliable? Like I said been away awhile.