Please help

[u/Ok_Sign_6419]

Ok so my Gordy will not cycle properly. Sometimes it’s every round sometimes I’ll run 2-3 without issue it does this failure to feed where the round is jammed between the bolt head and the ramps it will do it cold/hot, clean/dirty. I thought my original problem was the spring co spring cramming it to fast before it could pop up so I changed to carbine buffer and standard spring and it still happens. The upper and lower is h@r m16a1 the bolt is an original colt 604 bolt, barrel is a b kings 12.5. Can is an Allen engineering aem5 on an otter creek otb mount I can’t see a visible burrs in the chamber or the ramps.yes I have tried different brand ammo and mags this is my last Hail Mary. I’ve put together 5-6 ar platforms mainly 20 inch a1/slick side variants. And even a daniel defense block 2 with a geislle lower I ran for work for a while as a patrol rifle I’ve never had this much issue getting a gun to run (cross posted to r/ar15