As the title states...
Back story is I have a UC9 that had a very bad Century drunken monkey conversion done to the bolt. It will not feed from the left side of the magazines, I have tested numerous magazines. You can see where the case gets hung up on the bolt as it feeds, and it destroys brass if it does pick up and attempt to feed from the left side of the mag. I have tried different magazine catches and grip frames. Same issue with them all. The right side of the magazine feeds flawlessly. You can ride the bolt slowly or let it fly forward and if it is feeding from the right side of the mag, it slips in smoothly. Left side is lucky to make it into the chamber. Sometimes it mangles the brass enough on feeding that it even stays out of battery slightly as it bent the brass enough to make it oblong on the case mouth. Again, left side of the magazine is where I will get these feeding issues. 25 or 32 round magazines make no difference.
I have tried different barrels and even turned down an smg barrel to slip into my receiver. Also, sometimes the fired case doesn't eject and finds itself lodged in front of the restrictor ring or behind the trunnion. The trunnion and restrictor ring *seem* straight. The bolt face seems to have been machined (ground?) flat to remove the lip on the FA bolt as part of Century's conversion.
I was going to order a McKay bolt until a friend offered a Model A bolt/striker assembly. My question is, will that bolt work in my receiver?
My friend will bring the bolt when he's back in my neck of the woods but that may be a few weeks/months. I would like to know if I should go ahead and get the McKay instead while they're still in stock though if there may be any question on fitment. Are the McKay bolts any good? I hear a lot of mixed reviews on them. Impossible to get ahold of in case of an issue is a common complaint, and some sort of mentions on firing pins being shaped strange?
Back story is I have a UC9 that had a very bad Century drunken monkey conversion done to the bolt. It will not feed from the left side of the magazines, I have tested numerous magazines. You can see where the case gets hung up on the bolt as it feeds, and it destroys brass if it does pick up and attempt to feed from the left side of the mag. I have tried different magazine catches and grip frames. Same issue with them all. The right side of the magazine feeds flawlessly. You can ride the bolt slowly or let it fly forward and if it is feeding from the right side of the mag, it slips in smoothly. Left side is lucky to make it into the chamber. Sometimes it mangles the brass enough on feeding that it even stays out of battery slightly as it bent the brass enough to make it oblong on the case mouth. Again, left side of the magazine is where I will get these feeding issues. 25 or 32 round magazines make no difference.
I have tried different barrels and even turned down an smg barrel to slip into my receiver. Also, sometimes the fired case doesn't eject and finds itself lodged in front of the restrictor ring or behind the trunnion. The trunnion and restrictor ring *seem* straight. The bolt face seems to have been machined (ground?) flat to remove the lip on the FA bolt as part of Century's conversion.
I was going to order a McKay bolt until a friend offered a Model A bolt/striker assembly. My question is, will that bolt work in my receiver?
My friend will bring the bolt when he's back in my neck of the woods but that may be a few weeks/months. I would like to know if I should go ahead and get the McKay instead while they're still in stock though if there may be any question on fitment. Are the McKay bolts any good? I hear a lot of mixed reviews on them. Impossible to get ahold of in case of an issue is a common complaint, and some sort of mentions on firing pins being shaped strange?
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