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Posted: 1/29/2011 9:38:39 PM EDT
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So I took my AR15 out for its first run about a month ago, had a mix of Tula Ammo(I know) and Remington UMC.
I did NOT put my upper together(barrel) because I didnt have a vice block, so anyways I go to shoot and its eating up the UMC. Shooting the tulammo and it turns into a single action rifle, shoot, charge, shoot, charge, etc etc. My buddy swears up and down the gas block is misaligned and that the UIMC is just hot enough to cycle. Any thoughts? I think it was the ammo as it ate everything brass cased. The bolt wasnt coming back far enough it looked like, alot of double feeds, and stuff, it also wouldnt lock the bolt on the last shot. Also, is there a way to reduce the buffer spring noise? Thanks. |
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Keep the rig clean, including using a chamber brush by hand on the chamber, the upper bearing areas lubed on the wetter side with CLP, and let the rifle break in for a few hundred rounds for all the parts to mate.
Then go back and retry the ammo again. At that point, if you want to pull the gas block, there should be a good fouling mark where the gas block passage was placed against the barrel gas port, and if the burn mark is not centered around the barrel gas port mark, then you know that the gas block was not placed correctly on the barrel (against the barrel gas port). Note: not only can the placement be off side to side (rotation), but front to back as well. If a gas block was meant to use a forward hand guard end cap, and the float tube does not use such, then the Block needs to be off the barrel shoulder the amount that the cap thickness was. |
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