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Posted: 1/19/2016 10:14:49 AM EDT
| My buddy and I are both building suppressed, SBR AR9's. We both have received the stamps for the SBR lowers but are waiting on the stamps for the suppressors. Being impatient, he took his out last weekend to shoot without the suppressor and had a problem. He loaded 10 rounds in the colt magazine and they fired fine. He reloaded 10 more in the magazine and the fired rounds wouldn't eject. He could manually eject each round individually and fire the round but the bolt wouldn't do it. He is using a Heavy Buffers 8.5 oz buffer and the Wolff spring that came with it and a 5" barrel. He has a CMMG 9mm BCG with a CMMG dedicated 9mm upper. Any ideas? |
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Quoted:
My buddy and I are both building suppressed, SBR AR9's. We both have received the stamps for the SBR lowers but are waiting on the stamps for the suppressors. Being impatient, he took his out last weekend to shoot without the suppressor and had a problem. He loaded 10 rounds in the colt magazine and they fired fine. He reloaded 10 more in the magazine and the fired rounds wouldn't eject. He could manually eject each round individually and fire the round but the bolt wouldn't do it. He is using a Heavy Buffers 8.5 oz buffer and the Wolff spring that came with it and a 5" barrel. He has a CMMG 9mm BCG with a CMMG dedicated 9mm upper. Any ideas? Has he oiled the bolt? Oil the shit out of it and try. If that does not work try reducing the buffers weight. My builds use the yhm 9mm buffer which is about 5.9 oz. You could even try a H2 buffer. Also what kind of mags are you using? I have bad luck with ASC or c product 9mm mags but I also have a QC10 9mm colt lower. Try a metalform mag they are the best. |
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