I am trying to finish the upper on my first build and am slightly perplexed by something. I have a mid-length gas tube from bravo and lost the pin before i could install it. So, I ordered areplacement from Brownells… Colt part #sp95108 or 160-300-009. I even bought the #1 roll pin starter punch to install. However, when i start to in sert the pin , it just falls straight through. What gives? Is the colt pin too small? I have a vltor low pro block, but i cant see how that would make a diff. This being my first, any help would be appreciated.
The difference could be that the Vltor gas block is different. I would contact Vltor and ask them for a replacement. I am pretty sure that they will mail one to you.
My last build, I got a roll pin that came with the gas tube, and one that came with the VLTOR lo-pro gas block…both were the same size, which I believe is 5/64 x 5/16.
Not exactly sure of the dimension but i asked if it was standard before i bought it.
PM me your address. I’ll send a couple of milspec ones and you can try those out.
truth hurts, did the new gas tube roll pins work for you? I’m running into the same issue with my gas block; I ordered one from Brownells and the pin just falls straight through the hole. I figured it was out of spec and went to a local gun shop and bought two more, both of which fell straight through as well!