Quote:
Originally Posted by Justinmd
Your problem is bolt bounce. What you need is a buffer with a sliding countermass. A harder spring will not help (hammer spring or action spring).
We ran into the same problem on the first Masada, that's why the carrier has a sliding mass.
Basically as your bolt carrier slams home and trips your sear (which releases the hammer), the carrier then bounces back off the face of the barrel extension and pulls the gun slightly out of battery, and also doesn't allow full firing pin travel (thankfully). The hammer hits it at this inopportune time.
Grab a buffer and shake it back and forth, if you feel something sliding in there (usually a tungsten weight), then you should be good to go.
Let me know if you have any questions,
Justin
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This one. Most full autos have some sort of anti bounce wieght in the bolt so it stays shut in full auto. Change the buffer to one with a sliding weight and it should fix your problem. Also if the gun isnt an original shortie or even if the barrel manf. didnt get the port size correct, it could cause excessive bolt velocity which could be causing the problems youre experiencing. If this gun is ran suppressed that may only aggrivate the problem. Its either port size and its getting overgassed or the buffer needs to be changed. Alost of this has been said but without knowing your manf. its hard to know gas port sizes and such. Theres only a couple companies that actually have the port size right for shorties. LMT, Noveske, Colt, are the few I know are correct. Barrels from bushmaster, RRA, and YHM, just to name a few arent correct and can result in beating the crap out of your gun along with the problems youve described. Hope this helps.