For starters, I am an AK noob. I bought a PSA AK 103 Premium. I have owned it since last July, but only shot it once. Got about 5 moa using tula ammo. The muzzle device wiggles/has slop. When I pushed in the detent and rotated it to tighten, I can get about 3/4 of the way around and it is tight, but about a 1/4 the way short of the detent. I am concerned that the loose device does affect accuracy. I presume that it is supposed to be tight? What would folks advise I do? I thought about maybe using a shim, shaving some material off the base of the device to get the extra turn or just buying another MD.
I also notice that the FN barrel is not crowned. I do not know if this is common for AK's?
Any feedback would be appreciated.