CMMG Ar-15 .22 Lr Magazines

i have been running the mag that came w/ my (non stainless steel) kit like crazy and letting other people try it and running it more.......i don't really even know how many
thousands of rounds (maybe 12k-ish)
i have run thru my first mag and it has only jammed maybe 10 times TOTAL and they were all from bad rounds or dirty kit.
(waaaaaaay better than the dedicated S&W my buddy has btw)
however,
when i got this mag i was noticing that their are nubs on the backside of it to make it sit firmly in the magwell.also it came w/ a slip that said to file off the nubs if it didn't run smoothly.
i tried to run it but it kept jamming and double feeding.
so i filed the nubs off completly and ran it again.
it jammed much less and seemed as tho it was starting to seat in the spring a little better.
it was running smoother the more i ran it.
i am thinking of actually shooting a bit of graphite into it b4 i run it next time as the orignal mag feels smoother if u push the plate down w/your finger. also the spring feels much tighter than the one that runs great.
i actualy breathe a lil easier knowing i have more than one of these mags now as this conversion
kit is by far the best investment i have made as far as
fun trigger time vs. $$$ EVER.

I recently bought a CMMG Alpha conversion unit for my AR and included four of these mags. I really didn't expect any of them to work - but was more than pleasantly surprised. Flawless! The mags are a bit tough to load once you get into the 18-round range, but I managed go get 25 into each one. Then at the range - not a single jam, FTF, FTE - nothing. Ran all four dry - reloaded - did it again. Could not be more pleased with this cheap alternative to .223. Highly recommended.