So my AR-15 projects are wrapping up. And I was doing parts inventory and fitment checks on my AR-308 projects. I have been slowly collecting parts and doing research for well over a year, (probably over 2 years)
My plans (for now) are to build 3 firearms, in 3 different barrel lengths. And do some testing and learn the advantages and disadvantages of the different OAL. Enough about that!
So the reason for my posting this thread is my 308 BCG, I bought year(s) ago, don't remember where.
I nearly posted a pic in that new ar10 bolt id thread.
During mock up with 3 different barrels, I couldn't get the bolt to go into full battery. After pulling the barrel and aligning the bolt up by hand, the spline on the back of the extractor is too wide to engage the splines on the barrel.
So then I start wondering if it was a different caliber bolt, so i took a 308 casing to check fitment and noticed the bolt face has dual electors. The case was hard to snap in place, but it finally did. My other 308 is actually an AR-10 and these are LR-308 dpms pattern, not sure if the bolts are compatible as i don't have it with me for reference. But I would like to know.
So, I am thinking easy fix. Either replace the extractor and upgrade the spring while I am there, or file down the spline to fit. Either way I'll probably remove the extractor. But now, I discover one of the 2 ejectors has decided to stay depressed! I can't win for loosing!
Now I have to figure out how to "fix" my new parts. Ugh!
My plans (for now) are to build 3 firearms, in 3 different barrel lengths. And do some testing and learn the advantages and disadvantages of the different OAL. Enough about that!
So the reason for my posting this thread is my 308 BCG, I bought year(s) ago, don't remember where.
I nearly posted a pic in that new ar10 bolt id thread.
During mock up with 3 different barrels, I couldn't get the bolt to go into full battery. After pulling the barrel and aligning the bolt up by hand, the spline on the back of the extractor is too wide to engage the splines on the barrel.
So then I start wondering if it was a different caliber bolt, so i took a 308 casing to check fitment and noticed the bolt face has dual electors. The case was hard to snap in place, but it finally did. My other 308 is actually an AR-10 and these are LR-308 dpms pattern, not sure if the bolts are compatible as i don't have it with me for reference. But I would like to know.
So, I am thinking easy fix. Either replace the extractor and upgrade the spring while I am there, or file down the spline to fit. Either way I'll probably remove the extractor. But now, I discover one of the 2 ejectors has decided to stay depressed! I can't win for loosing!
Now I have to figure out how to "fix" my new parts. Ugh!