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Mods have been very little by me. I replaced the extractor, ejector lever, and extractor spring with HK parts. I'm happy with the way it operates with good ammo but wish it would work better with cheap stuff. If I try to use reloads I get some FTEs. There is apparently a problem with using an HK91 hammer spring, making it necessary to use good quality powerful ammo to push the bolt back hard enough to get a good ejection. I might try to replace that spring to see if that helps in the cycling of the system. I might be replacing the whole bolt assy with a FA HK unit, since it's a SBR now and I don't have to worry about that pesky 922 thing any more. And I might get a registered sear some time in the future. |
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