ipscgraz
CGN Ultra frequent flyer
I normally let the bolt sit submerged in Varsol, to dissolve the sticky crap that is everywhere. I have never tried brakekleen but you must get the crap out of the firing pin bore in the bolt/breech block.
Try brake clean. Over a garbage can.... Let drip dry....
You need to be able to remove the bolt to do a proper lube job on the bolt roller.... If it went in, it should come out! As one poster said, "you need to use the right amount of tongue on it"!
The doubling is likely caused by either a stuck firing pin or an out of spec "trigger group to receiver" relationship.
The 5rnd mags are "poo", very hard to get in and out. The 20/5 mags are easier as the rocking motion involved is helped with a larger Lever.
This may help, Shout out to TonyBen!
Dissassembly Video
https://youtu.be/MzPw9BD56hU?list=PLeFhsJJIx2fT5XEDBnGRK4BOrU9RVLGn s
Lube Video
https://youtu.be/eSX2koEAYvQ?list=PLeFhsJJIx2fT5XEDBnGRK4BOrU9RVLGn s




























