I Just had A uppper put togethter by krieger 18" with jp tac brake and full length freefloat hanguards, bushy flattop, and BCG I had it chambered in 223rem, 1/9T and mated with A bushy lower with A magpul PRS stock. I ran some rem223 55gr sp and it wouldn't eject so I put some of my loads of nosler custom comp 69gr 23 RE15 it grouped great at 100yds but it wasn't cycling. Can anybody help me out with this? thank you
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