Upper and lower mating tolerances
Ok, so I just finished my first build with a stripped spikes upper and lower. This entire gun was pieced together. I am having a serious issue with the tolerances being very tight. I mean in regards to the last 1/16 of space between the upper and lower. It's so tight it literally snaps into place. It almost seems like there is maybe an issue with the back of the bolt carrier and the buffer? The take down pins are also ridiculously tight, but I have read this is not uncommon(its luck of the draw). However I have never handled an AR with the upper and lower so tight it literally snaps together. Any ideas as to what this could be or if their is a fix?
Upper and lower mating tolerances
Quote:
Originally Posted by
cbx
Lucky. Always seems like they are too loose for me.
I'm trying to decipher if that's a personal issue or if the lowers that you've been trying to "mate" with have all been used & abused. Either way, that seems like TMI.
I do agree with Euro that the loose ones are definitely easier to mate with.
;)