Had a gent bring in an AR, 80% lower, rifle build, won't run with the rifle-length action (buffer) spring. One of the other guys put a carbine-length spring in with the rifle buffer and supposedly works fine.
I've never heard of putting a carbine-length spring in a rifle-length tube. Just sounds odd to me.
Gun is short stroking with the rifle spring & buffer. Got one mag to run fine, another mag full, would only feed 2 rounds and not chamber the 3rd. Carrier key is staked right and tight, gas block looks to be in the right place.
Feels like the bolt catch was milled out funny, bolt won't lock back. Mag catch is also odd feeling, like something is binding.
Using brass-cased ammo, too. Independence XM193.
Head scratcher....
I've never heard of putting a carbine-length spring in a rifle-length tube. Just sounds odd to me.
Gun is short stroking with the rifle spring & buffer. Got one mag to run fine, another mag full, would only feed 2 rounds and not chamber the 3rd. Carrier key is staked right and tight, gas block looks to be in the right place.
Feels like the bolt catch was milled out funny, bolt won't lock back. Mag catch is also odd feeling, like something is binding.
Using brass-cased ammo, too. Independence XM193.
Head scratcher....
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