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Posted: 11/26/2009 7:54:29 PM EDT
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Sorry for poor photo quality.
http://i83.photobucket.com/albums/j293/sid_418/DSCF5265.jpg http://i83.photobucket.com/albums/j293/sid_418/DSCF5266.jpg As you can see the upper receiver is bent at the area just below the ejection port, because I'm retarded. The upper is a standard bushmaster A3 flattop, has ben gun-koted in FDE. Can this be repaired by a gunsmith, or am I shopping for a new upper? Thanks. |
| My wild guess is that you put the barrel on without a receiver block. Anyway, I suppose you might be able to bend it back to sort of straight without cracking it, but a.) your bcg may well have some trouble making its appointed rounds and b.) I'd never trust it. |
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Quoted: Thanks guys, thats what I figured, just didn't want to admit it to myself I suppose. Oh, and NOOOOOO.....I wasn't putting the barrel on without a block...what kind of IDIOT would try something stupid like that  Well that sucks, live and learn. Order another upper and an action block or see if you can borrow an action block from a fellow Arfcom member in your HTF. |
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Quoted:
That looks like blood around the barrel extension. Maybe he bent it beating a bad guy in the head with it? 
He must have run out of ammo while fending for himself beating back the Zombies or Black Friday Shoppers. Its a wall hanger now or a new flower pot. Come on pony up, we all F-up....come clean, how did you fubar it? |
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Quoted:
After you buy a set of blocks to remove it. No sense in making it worse. You might be able to salvage for a 22lr upper. 458 That would be about the only way I'd reuse that upper. In fact, when I kaboomed my 9mm carbine, the upper bulged out in the same spot (not nearly as much). I was able to straighten it out just fine, but that upper isn't getting anything but a .22 barrel ever again. Note that there is ABSOLUTELY NO PRESSURE applied to the upper when the rifle is fired-it is just there to house and align the BCG with the barrel. But it needs to do that pretty precisely or the bolt and barrel extension will wear oddly. A .22 bolt actually has a non-moving part that sits where the BCG goes, so there is no alignment issue if the upper is a little less than perfectly straight. |
| I may be the odd man out here, I think with some TLC it might be able to be put back in place and to be serviceable and safe. If you want to get rid of it cheaply I would like to try to rehab it. If it cannot be brought back perfectly flat and square, as well as safe, I would not be out too much but I would have fun trying and I might learn something...best of luck and please keep me in mind...Thanks....<><....:) |
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Replace this part, write it off to experience. Its not that expensive a thing to do, upper receivers all all over the place and prices are down. If you try to fix it there are at least two problems you will run into. First, this part supports the bolt and has to be very precise. It will be difficult, if not impossible to get it right. Also, major issue is that the metal will be weakened by the bending. It might crack and that would be a very bad thing.
It would probably be OK to use for a .22 upper as it would not be stressed, but really, this part is less than a hundred bucks, what is your safety worth? |
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Quoted:
Thanks guys, thats what I figured, just didn't want to admit it to myself I suppose. Oh, and NOOOOOO.....I wasn't putting the barrel on without a block...what kind of IDIOT would try something stupid like that (sniff, sniff) I smell nervous sarcasm. 
C'mon, we know what you did. Fess up! Now that uppers are down in price and up in availability, I fear a lot more people will be trying to get way with assembling one without a receiver block. And it can be done, I've done it (before I bought my own receiver block). But I used a set of barrel blocks and clamped the barrel in a vise just ahead of the barrel nut. No pressure was ever put on the upper, it was just hanging out in space. It looks like the shape of the barrel above might preclude using barrel blocks in this case. If you're going to hold it by the upper, you have top do it right. Or else, well, see photo above. |
| I saw a guy come in the gun store with the exact same thing done on a new 6520 that he was trying to swap the a2 for a m4 flattop and didnt use a block and its a spitting image of the ops pic.....feel better op at least your not him an your not out a brand new 6520 a2 upper looking at specialized arm. prices...yikes! |
| I'd get a piece of phonelic, radius the end of it, clamp that tightly in a vice and start rubbing that back out. Just like the Dentwizard guy does on your car door. really if you do scrap it send to me and I'll find out if it can be reworked, looks like a fun repair. Kevin62 |
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Next time you'll buy the damn action block and wrench instead of using having your fat buddy sit on it while you go at it with a oil filter wrench (or stick it in a vice between two piece of pine??) Uppers are cheap, that thing is fubar, chalk it up to experience. |
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Only way you could reliably fix it would be to bend it back, cut off the dust cover hinges, then mill and TIG weld a plate to reinforce it.
So yeah, unless you have a machine shop handy, its waaaay cheaper to just buy a new one (but hey, you could always stick the old one on the EE for a few bucks, see if anyone who does have a shop wants to play with it ;D ) |
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