Please help! SWD M11

Ok , so Ive got an SWD M11 (mac 11) manufactured in good ole ducktown TN. (semi auto) Anyways, I'm kind of stuck here and I know someone out there can help me out.

I traded for this thing, and im having true failure to extract, everytime i fire the pistol the casing only exits about half way out of the chamber. I know the extracter is fine, because it works A-ok with the carbine upper i have for it. Also, theres significant damage to the rim of the cartridge as though the extracter has ripped right through it. The chamber also does not appear to be rough or coarse... and theres less then a mm of play while the bullet sits unfired in the chamber. (this appears to be acceptable because once again, the carbine upper works fine under the same circumstances.) either way, every time i fire it seems like the case maybe over expands because it gets stuck in there and its difficult to get out. Ive used four different kinds of ammo, (all of which worked fine in the carbine upper)

im not sure if yall know how this works but the upper for the m11 is just a barrel and a frame, the rest of it (bolt, springs, ejecter, everything) just swaps from upper to upper.


does anyone have an suggestions to what this might be?

i keep going back to thinking it has to be a damaged , dirty, or fouled chamber, but ive done a significant share of cleaning and polishing.

what say you of this boondoggle>?:banghead:

nobody can help with this issue?

bump...

I hear ya

I definitly hear what both of you are saying, the only thing that has me confused is that like I said, there are two different uppers. (pistol and carbine) Both of which use the same bolt, bolt spring, ejector, firing pin, everything is the exact same because it swaps from the pistol upper to the carbine upper (the carbine upper works flawlessly). effectively, the only thing you change when you swap the uppers, is the barrel, and what I would assume would be called the dust cover (which houses and also supports the barrel)

this leads me to believe that there is an issue with my chamber,

but i dont want to fork out the dough for that if its not going to fix it...

im already a lil upside down in it..


any home remedies?

For learnings sake.

Ok heres how the one gun looks broken down into the pieces

carbine upper on top

pistol upper below,

(they each have their own barrel)

the on the bottom left (switches between the uppers)

and finally the lower and trigger assembly on the bottom right...

tools

time to bust out the micrometer.