Octoroc

Brief update: I was using Heckler & Koch Power Gas. I've just spent the last two days using ASG Ultrair and I haven't had a single issue. The pistol is running exactly as I would hope with all three magazines. No failures to feed and no failures to fire so far. I've put maybe 200 BBs through it so I've still got a lot of testing to do before I let myself get too excited, but it's looking good. Thanks for the input and suggestions. @Cr0-Magnon I'm still shooting in the garage in relatively comfortable temperatures but maybe try experimenting with other gases your 19x?

I’m shooting inside a garage. It’s been the same no matter what the temperature including hot days this summer. I’ve ordered some different gas to try. See if that helps.

Thanks @rocketdogbert it’s an option that’s on the table for sure. Any thoughts about the specific issues I am having in particular, or about the assessment that the pistol was over oiled?

I have a Umarex Glock 17 Gen 5 gas blow back pistol. It came with a Gen 5 magazine and I bought two Umarex Gen 4 magazines to go along with it. Im using H&K Power Gas and ASG Cursed 6mm 0.25g BBs. The slide was painted by the distributor as per UK law/my request. I’m strictly a garage target shooter. Since day one I’ve had failures. The pistol only projects a BB every second trigger pull but gas is clearly being released and the slide cycles on every trigger pull. This is an intermittent problem that gets worse with use. By the time I’ve gone through 3 magazines I’m lucky to get the pistol to shoot at all. I’ve attached a video that shows the issue. Some of the time a BB feeds into the chamber but fails to fire, only for two BBS to be projected on the second trigger pull. Sometimes (much less often) I get a failure to feed and there’s no BB in the chamber after the slide cycles. I’m aware of compatibility issues with the Gen 4 magazines and my Gen 5 Glock. My understanding is the geometry means they don’t always seat quite as well as the Gen 5 magazines which can sometimes result in the slide failing to seat properly. I found this to be true for both Gen 4 and Gen 5 magazines with my pistol. The problems I’m having are as bad with both Gen 4 and Gen 5 magazines. I contacted my supplier. They were good enough to have my pistol collected and to take a look at it. It took a long time but eventually they told me “the inside of the slide was saturated in oils Im assuming from the factory which was causing the issues.” When I got it back the pistol cycled 15 shots without a hitch. A miracle! Then I had a failure to fire (I’m not sure what the issue was in this instance). After that it was back to its old ways as described above. Does anyone have a suggestion? It doesn’t have to be the most accurate, the fastest, or most powerful. All I want is to be able to reliably do pistol drills at 10m. I have a £15 springer that is more fun to use because I know every time I pull the trigger I’m going to put a hole through my paper. IMG_2351.MOV