I have this LMT upper with RRA SA BC group. The barrel is 14.5 with Vortex. Once in a while I have extractor problems like the round not exracting properly. Last trip to the range my mag ran out and had a few rounds on the bench so I dropped one at a time let the bolt go and fired. The Bolt dropped the spent casing on the follower like I put it there when it was live. It failed to extract the shell casing.
Checked my mags no problem with any of them.
What is up with this bolt or am I over looking something.
First thing to do is place an order with BravoCo to get their upgrade kit. More than likely you have a blue insert (not the correct one for a carbine) as well as a short extractor spring. You can use the O-ring provided if you choose. I run an O ring in shorter barreled rifles but donāt use one in my mid-length. It sounds lke you do not have enough tension on your extractor.
exactly how does it fail to extract- is it leaving casings in the chamber? if the casings are coming out of the chamber but not exiting the action, itās probably your ejector. otherwise, as swat said.
Ok once in a while I get a half way ejected spent casing. The last range trip I was dropping one round at a time. I laid the round on the follower and sent the BC home, fired the round and the spent casing was there just as I laid it only spent. Sounds like ejector right. Just then I loaded the 20 round mag I had been using in the rifle with 20 rounds of M855. It fired and ejected each and every round loaded in the mag like it was suppose to. Received the BC bolt upgrade kits and installed them today. Next is the range to try it out.
If youāre just dropping the rounds through the ejection port and not feeding them from a mag, itās possible the extractor isnāt slipping completely over the cartridge rim.
When fed from a magazine, the cartridge rim slides up and under the extractor. When you just drop the bolt on a cartridge, the extractor has to snap over the rim. The latter requires a lot more effort.
ejector pushes case off bolt faceā¦ the plunger looking deal on the bolt face that should push in with significant resistance, but move back & forth freely. make sure itās lubed and or brass shavings havenāt impeaded travel
extractor pulls case out of chamberā¦ this is the part referred to in the āupgradeā kit
I see the point of the one round drop. The ejector is working fine as well. It has a Semi carrier and Colt Spring & H buffer if it matters. Either way I have a Colt bolt due in in a day or so. I will swap it out and see if it still fails to eject.
if the ejector isnāt ejecting, the case doesnāt stay locked up tight against the extractor, dropping it in the action. if the extractor is locking just enough to extract from the chamber, but then lets go, the cast will also drop in the action.i t could go either way, but my guess would be ejector. less variable to make it happen.
ok I already received the BC bolt upgrade kit and installed it. On order I have some CS ejector springs so either way I should have it licked. I will report next week to let you know how it worked out and many thanks so far.
