My middy is shortstroking!!!
I built this middy about a year and a half ago with a cmmg upper, denny's 16" operator barrel and gas tube, bcm m16 carrier, and as far as I know CAR buffer (from stock kit on global tactical website labeled as "standard buffer").
Granted I haven't shot it much, but at first (100 rounds???) it never failed. Now it's hard to go a round without short stroking! Could it be the buffer? Carrier? I guess it could be a gas leak or something, but how/why? Can it be too lubed up? At first when it started the gun was pretty dry so I lubed it up, ran 60 rounds through it w/o a problem. Put it in the safe for a few days take it out sloppy wet and it won't go a round or two w/o shortstroking. I just don't understand!
Any help would be awesome! Thanks fellas...