First I'll star by giving some specs/components
Lower is a Joe Bobs Spartan Billet lower
Spikes Tactical lower parts kit
Thordsen Customs ENHANCED AR PISTOL BUILDERS PACKAGE:
- Carbine Buffer spring
- 3.0 oz. standard recoil buffer
VLTOR MUR-1A Modular Upper Receiver w/Forward Assist
Hardened Arms 10.5 inch 300 Blackout:
- 10.5" HBAR Profile barrel with M4 Extension
- .750" barrel diameter at gas block
- Low profile gas block
- Barrel dimpled to secure gas block
- Pistol length gas system
WMD Guns Nickel Boron X Bolt Carrier Group
30 round PMAG Gen3
Now on to the problems... I took it to the range today to get it sighted in. The range I go to only allows you to load a maximum of six rounds at a time, I however only loaded five at a time. The very first time I loaded the mag into the gun I had the bolt back, loaded the mag, hit the bolt release and right off the bat it had a double feed. Cleared the double feed and proceeded to fire. Fired all five rounds but the BCG failed to lock back after the final round.
Next set of five, bolt road home with no double feeds but after the second shot I had a FTE which caused a live round to get jammed up in the weapon with the spent casing. cleared that out. Also had one lite primer strike which resulted in a FTF. Out of the 5 sets of 30 rounds I fired the BCG failed to lock to the rear 3 times.
My guess is right off the bat to take a look at the buffer spring/buffer then move onto the gas block, gas port. Since it's only a 3.0 oz buffer I am wondering if I need a heavier buffer? Let me know what you guys think, and I appreciate the help!