Hi, I just received my M4-22 today and overall look, feel is fantastic. I do however have an 'issue' with the fit of the upper to the lower and was wondering if anyone else had this or heard of it before and/or a fix. The upper has a torsional rocking from side to side. Front to back it seems solid, rotating (as looking at the top down) from right to left using front pivot/take down pin as axis it seems fine, however twisting the upper along the axis of the bore leaves something to be desired. It seems as if the two pivot points and the long pivot point at the front take down pin allows rotation. This just doesn't seem right to me. I'm not a big AR fan but I've never had one with that problem. I have had to use a red wedge to take up some slack in upper to lower fitment but never this kind of issue. I want to take it to the range and test it for precision and accuracy before I contact them but wanted to get the feedback from the brain trust here too.
I'm not knocking the product just seeking knowledge. The heft and feel is great. If it shoots well and feeds the ammo I have then this might just be a moot point.
TIA!
I'm not knocking the product just seeking knowledge. The heft and feel is great. If it shoots well and feeds the ammo I have then this might just be a moot point.
TIA!