I have a 13.1” Ripcord LDR1 ODG rail, VLTOR MURS upper receiver and SOLGW 9 port Keymo FH or 4 prong SF along with SIONICS NP3 and BCM 4x4 CH
I was going to build a 13.9 Criterion Core barrel which I have ordered but I am wanting to get a specific pistol in the mean time. All you need is barrel, tube and GB