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| SKS gas cylinder problem, odd op rod? http://www.yesterdaysweapons.com/phpBB3/viewtopic.php?f=28&t=12366 |
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| Author: | Gun Nut [ Mon Mar 31, 2014 5:59 am ] |
| Post subject: | SKS gas cylinder problem, odd op rod? |
A friend brought over an SKS he'd had trouble with, specifically unintended burst fire. I'd suspected the common problem of soft primers and no recoil spring but tests showed no tendency to dent primers. {edited} to correct misconception. Finally remembered that the gas piston and op rod are two different parts. The return spring being on the shorter op rod. After cleaning a large amount of carbon and grit fouled cosmo or grease from the gas tube and op rod tube I found that the firing pin will now indent a primer when the bolt is allowed to fly forwards and slam loads the cartridge. The crud in the gas system had slowed the bolt operation to some extent, but was probably not the real cause of the doubling and burst fire. Now its all cleaned out and lubed, next step will be ordering a replacement firing pin with return spring. |
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