Murfpcola
Master
I have a 16" carbine gas 7.62x39 upper on a Aero Precision lower with a carbine buffer. I have had it about 2 years now. I had 10 out of the first 80 rounds with light primer strikes so I added an enhanced firing pin and it has been flawless up to 260 rounds. I have actually kept the exact round count since I knew going in that these could be problematic. I have used 10, 20 and 30 round C P Defense mags without issue as well as a couple of 30 round ASC mags also without a hiccup.
A couple weeks ago I picked up 4 more 20 round CP Defense mags as well as 2 30 round ASC mags, all new in wrapper. I was shooting at some family land and since I had this rifle with me I figured I would try out the new magazines. I only had one 20 round box of Wolf ammo so I loaded up one of the ASC mags and started to shoot. A few rounds in and I started having light primer strikes.
Here are a few things I tried. I swapped lowers to one with a standard mil-spec trigger. I tried 4 of the 6 brand new mags. I would run the light strike rounds back through and some would ignite and some not. I could drop the mag and pull the charging handle back far enough to cock the hammer but not eject the round and it would fire every time. If I dropped a round into an open chamber with no mag it would fire every time. I could use the bolt release and tap he forward assist a couple times an have some light strikes. If I did the half cock try with a mag inserted I had light strikes. The ammo was a brand new package that was in good condition.
I only had the one 20 round box with me that day and I probably had at least 15 light strikes but all eventually fired so no duds. I also did not have any of my known mags with me. The rifle was filthy as it had never been thoroughly cleaned since new, only light wiping and then oiling as well as a patch down the barrel. No scrubbing. When I got home I disassembled the BCG and did some wiping and scraping on the bolt. I also sprayed some carb cleaner in the barrel extension. I figured that would be enough to get it running againn but late one evening I got a chance to run five rounds through it and the third round failed to ignite the first time.
Do you guys think it could possibly still be dirty? I guess I need to get out some solvent and brushes. Will a .223 AR chamber brush do much to help clean my lockinglug area? I will post pics of some "scratches" on the bottom of the bolt carrier that are concerning. You can barely feel them but I know they are not normal". Also there is some marks on the carrier right near where the firing pin is.
Any input is appreciated and thanks for reading this far.
A couple weeks ago I picked up 4 more 20 round CP Defense mags as well as 2 30 round ASC mags, all new in wrapper. I was shooting at some family land and since I had this rifle with me I figured I would try out the new magazines. I only had one 20 round box of Wolf ammo so I loaded up one of the ASC mags and started to shoot. A few rounds in and I started having light primer strikes.
Here are a few things I tried. I swapped lowers to one with a standard mil-spec trigger. I tried 4 of the 6 brand new mags. I would run the light strike rounds back through and some would ignite and some not. I could drop the mag and pull the charging handle back far enough to cock the hammer but not eject the round and it would fire every time. If I dropped a round into an open chamber with no mag it would fire every time. I could use the bolt release and tap he forward assist a couple times an have some light strikes. If I did the half cock try with a mag inserted I had light strikes. The ammo was a brand new package that was in good condition.
I only had the one 20 round box with me that day and I probably had at least 15 light strikes but all eventually fired so no duds. I also did not have any of my known mags with me. The rifle was filthy as it had never been thoroughly cleaned since new, only light wiping and then oiling as well as a patch down the barrel. No scrubbing. When I got home I disassembled the BCG and did some wiping and scraping on the bolt. I also sprayed some carb cleaner in the barrel extension. I figured that would be enough to get it running againn but late one evening I got a chance to run five rounds through it and the third round failed to ignite the first time.
Do you guys think it could possibly still be dirty? I guess I need to get out some solvent and brushes. Will a .223 AR chamber brush do much to help clean my lockinglug area? I will post pics of some "scratches" on the bottom of the bolt carrier that are concerning. You can barely feel them but I know they are not normal". Also there is some marks on the carrier right near where the firing pin is.
Any input is appreciated and thanks for reading this far.