I've owned my Bushy AR for several years now, and I'm trying to get the hang of disassembly (beyond just stripping it for cleaning.) Right now I'd like to remove the gas tube and barrel from the upper receiver. I'm using the Bushmaster DVD as a guide. I've removed the roll-pin that holds the gas tube in place, but the tube won't budge -- it's like it's stuck in the front sight housing. I've tried dripping oil down the outside of the tube & wiggling it around to loosen it up a bit to no avail. I don't want to damage the tube by torquing on it too much, so time to stop and ask for help...
On the video, when the upper receiver is being assembled, the tube slides right in. I've put God knows how many rounds through it since having the tube replaced a few years ago. Could fouling have it stuck in place? Is there something I have to do other than removing the roll pin? What am I missing?
On the video, when the upper receiver is being assembled, the tube slides right in. I've put God knows how many rounds through it since having the tube replaced a few years ago. Could fouling have it stuck in place? Is there something I have to do other than removing the roll pin? What am I missing?