Hey everyone! I am a new member but I have been reading these boards for awhile. I'd been wanting to build an ar for a couple years (I have been collecting guns for a long time now) and just finally got my first ar built! I wanted to first of all say thanks for all of the great info and help that this site has given me.
Ok, now my issue. First off, the weapon has the following configuration:
RRA stripped lower w/ DPMS lower parts kit
ACE Socom stock w/ DPMS buffer and carbine spring
Unknown A3 upper w/ 10.25" barrel on form 1
This rifle is using Colt LEO alum 30 round mags
I finally got it built and to the range a couple days ago and fired my first round out of it and it felt great. Went to fire the second round and nothing. It had failure to eject. I did some research to find that little technical term for it and for anyone who is not familiar with it, bushmaster describes it as the following: When a round is fired and the empty shell casing is extracted from the chamber but is not ejected completely and upon full cycle of the carrier, it attempts to load a fresh round into the chamber. This then squeezes both the spent cartridge and the fresh round down into the chamber side by side. It looks similar to a double feed but one of the rounds are spent.
Bushmaster said that it could be the ejector or the ejector spring. They suggested cleaning it or replacing it. The thing that I don't understand is that when I did a function check, I can manually cycle rounds through the rifle very quickly and even rather slowly and it cycles great. The only thing that I can think of is that I over oiled it since I'm not too familiar with how much oil is too much, I may have gotten carried away...plus it was a fresh build and I wanted it to absorb plenty of oil. I pulled the rifle completely apart and found an excess amount of oil inside of the carrier. I cleaned the entire rifle and applied a much more subtle amount of oil to the carrier this time. I have not been able to shoot it again to find out if it helped so I just wanted to get some opinions...figured it wouldn't hurt. I appreciate any information and I will try and dig out the digital camera (we're moving so it's packed) and get some nice pics taken and post them for your viewing pleasure.