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Posted: 8/3/2011 8:11:13 PM EDT
But seriously I just bought this 5 minutes ago for a .22 build and I'm starting to have my doubts. JB weld?
Link Posted: 8/3/2011 8:14:45 PM EDT
[#1]
Buy a new one.

what happened to it?
Link Posted: 8/3/2011 8:16:27 PM EDT
[#2]
I dunno.  I'd probably just remove the small parts, toss it, and get a stripped upper.
Link Posted: 8/3/2011 8:17:00 PM EDT
[#3]
Maybe try this stuff?



http://www.brownells.com/.aspx/pid=5808/Product/EPOXY_METALS



It's supposed to be machinable when set. Might be worth a shot for a .22.
Link Posted: 8/3/2011 8:19:45 PM EDT
[#4]
Quoted:
Maybe try this stuff?

http://www.brownells.com/.aspx/pid=5808/Product/EPOXY_METALS

It's supposed to be machinable when set. Might be worth a shot for a .22.


Pretty expensive.
Link Posted: 8/3/2011 8:21:42 PM EDT
[#5]
Quoted:
Buy a new one.

what happened to it?


No clue didn't ask. It looks new, so I'm assuming it was to tight in the block(Or didn't have an insert in the receiver)
Link Posted: 8/3/2011 8:22:28 PM EDT
[#6]
Quoted:
Pretty expensive.


^^^This.
Link Posted: 8/3/2011 8:27:33 PM EDT
[#7]
don't risk it, even with a 22





don't shoot jacked up equipment
Link Posted: 8/3/2011 8:32:01 PM EDT
[#8]
+1

Quoted:
don't risk it, even with a 22


don't shoot jacked up equipment


Link Posted: 8/3/2011 8:33:06 PM EDT
[#9]
Quoted:
don't risk it, even with a 22


don't shoot jacked up equipment


I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.
Link Posted: 8/3/2011 8:58:08 PM EDT
[#10]
Quoted:
Quoted:
don't risk it, even with a 22


don't shoot jacked up equipment


I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.


Oh really, so how come .22 uppers break AR hammer pins?
Mine did.
Link Posted: 8/3/2011 9:03:00 PM EDT
[#11]
I'd get rid of it. Upper receivers are fairly cheap.
Link Posted: 8/3/2011 9:03:34 PM EDT
[#12]
You'll shoot your eye out.
Link Posted: 8/3/2011 9:08:36 PM EDT
[#13]



Quoted:



Quoted:


Quoted:

don't risk it, even with a 22





don't shoot jacked up equipment




I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.




Oh really, so how come .22 uppers break AR hammer pins?

Mine did.


Because you had a crap pin?  



 
Link Posted: 8/3/2011 10:20:15 PM EDT
[#14]
Quoted:
You'll shoot your eye out.






recoil may not be much but it provided structural support.  a stripped upper is cheap and it wont take much time to swap everything over.  epoxy may hold it, but it wont hold it indefinately.  then you will have an upper that is splitting open again, and may cause unusual wear on other parts.
Link Posted: 8/3/2011 10:29:12 PM EDT
[#15]
Quoted:

Quoted:
Quoted:
Quoted:
don't risk it, even with a 22


don't shoot jacked up equipment


I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.


Oh really, so how come .22 uppers break AR hammer pins?
Mine did.

Because you had a crap pin?  
 


No, because the unbuffered .22 bolt batters the hammer and that breaks the pin.
Link Posted: 8/3/2011 10:49:58 PM EDT
[#16]
another vote for get another one.  warranty if you can if not buy a stripped upper.
Link Posted: 8/4/2011 12:35:42 AM EDT
[#17]




Quoted:



Quoted:



Quoted:

don't risk it, even with a 22





don't shoot jacked up equipment




I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.




Oh really, so how come .22 uppers break AR hammer pins?

Mine did.


physics



metal flaw+low flex point, where as your finger/hand does not have these

Link Posted: 8/4/2011 1:46:15 AM EDT
[#18]
I would JB weld it.  There is a putty by Devcon that is really strong and would work well with it.
Link Posted: 8/4/2011 1:56:26 AM EDT
[#19]
Pull the parts off of it and trash it.
Link Posted: 8/4/2011 2:40:42 AM EDT
[#20]
Quoted:
I would JB weld it.  There is a putty by Devcon that is really strong and would work well with it.


As would I.  JB weld is some serious stuff.
Link Posted: 8/4/2011 3:21:12 AM EDT
[#21]



Quoted:



Quoted:


Quoted:

don't risk it, even with a 22





don't shoot jacked up equipment




I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.




Oh really, so how come .22 uppers break AR hammer pins?

Mine did.
Too much testosterone.

You're an animal.









 
Link Posted: 8/4/2011 4:31:34 AM EDT
[#22]
Get on the EE and find a used one on the cheap
Link Posted: 8/4/2011 4:44:44 AM EDT
[#23]
JB Weld might work, for a 22 upper, but I don't know how long it would hold.

Blame it on the Accuwedge!




I would offer a 10 spot for that, but I dont think you are supposed to do that in tech forums.
Link Posted: 8/4/2011 5:08:29 AM EDT
[#24]
Quoted:
Get on the EE and find a used one on the cheap


^This

or this

Link Posted: 8/4/2011 5:21:06 AM EDT
[#25]
The cost of a stripped upper is small compared to the trip to a doctor or ER.  

When you shot jacked up gear, you not only expose yourself to danger, but everyone else on the firing line too.


Would JB Weld work?  Maybe, but I'm not an engineer, and it doesn't sound like anyone else in this thread is.  Err on the side of caution when dealing with firearms.  

Disassemble the upper, remove the receiver, clean it, and put it on your desk as a paperweight and a reminder not to shoot FUBAR equipment.
Link Posted: 8/4/2011 5:26:39 AM EDT
[#26]
JB weld it first. See if it will hold if not throw it away. Or make something out of it!!
Link Posted: 8/4/2011 6:27:38 AM EDT
[#27]
Quoted:

what happened to it?


Looks like a Panther Claw fail.
Use a clamshell and avoid this scenario especially if you have to torque to the higher end of the range.

That upper is junk.
Cut it in half and sh!t can it.

Two lessons in this one.
Link Posted: 8/4/2011 10:58:12 AM EDT
[#28]
I can't believe this is even being debated. When a crucial structural element for a firearm is clearly broken it should not be used in said firearm unless it's going to be a wall hanger....or you live in Kandahar.
Link Posted: 8/4/2011 11:05:41 AM EDT
[#29]
Quoted:
The cost of a stripped upper is small compared to the trip to a doctor or ER.  

When you shot jacked up gear, you not only expose yourself to danger, but everyone else on the firing line too.


Would JB Weld work?  Maybe, but I'm not an engineer, and it doesn't sound like anyone else in this thread is.  Err on the side of caution when dealing with firearms.  

Disassemble the upper, remove the receiver, clean it, and put it on your desk as a paperweight and a reminder not to shoot FUBAR equipment.


THIS x Infinity
Link Posted: 8/4/2011 12:24:15 PM EDT
[#30]
Looks like its time to move to Kandahar! hahahahaha
Link Posted: 8/4/2011 12:24:54 PM EDT
[#31]
Why not just duct tape it?

As most others said-just chop it up, file 13 and get a new one.
Link Posted: 8/4/2011 1:55:40 PM EDT
[#32]
Quoted:
Quoted:
Quoted:
don't risk it, even with a 22


don't shoot jacked up equipment


I don't see what would go wrong? Blowback on .22's isn't that strong. Hell, you can hold the bolt forward on a 10/22 to make it a single shot.


Oh really, so how come .22 uppers break AR hammer pins?
Mine did.


Sounds like you had a cheap ass hammer pin.
Link Posted: 8/4/2011 2:26:56 PM EDT
[#33]
Demo flat tops at Bravo are 79.99.  If you do use that epoxy weld crap, it probably won't hold right (it says it is for non-critical areas; i.e., no stress) and will look like shit.  Unless you weld it and finish it which will end up costing the same as an upper anyway.  Throw it away.  It is junk now.  The demo uppers will be great for a .22 build.  If you don't have a clamshell. you can clamp the upper sideways between two wood block in a vise to install the barrel - much better than using the takedown lugs to torque against.
Link Posted: 8/4/2011 2:29:58 PM EDT
[#34]
If that glue stuff isn't worth a shot, then you wouldn't have asked. Since it's a .22, I would say why not.
Link Posted: 8/4/2011 2:55:29 PM EDT
[#35]
I bought something that might work. I will post the results when I get it.

I'm not worried about anything happening. I don't even know what could happen? If it had a 5.56 BCG in it, I could see the problems.

The only thing that I could think of is.. If it get's repaired and "cracks" again when shooting it, it will probably just jam the bolt on the hammer or something.
Link Posted: 8/5/2011 4:13:24 AM EDT
[#36]
I wouldn't recommend JB Welding it...Awhile back I had a green gas airsoft M9 and a piece of the mag broke off (the piece thats held the BB's in place) and it withstood about 3 shot then broke again...The last thing would want to do is run JB on a real fire arm!...Just my .02...Good Luck!
Link Posted: 8/5/2011 4:23:15 AM EDT
[#37]
I was going to say that since it's only for a .22 go ahead but then I thought, what if someone decides to do something else with it later, nah smash it with a 20 lb. sledge.
Link Posted: 8/5/2011 7:38:36 AM EDT
[#38]
Just say NO to glue and guns...
Link Posted: 8/5/2011 8:32:56 AM EDT
[#39]
Since you have it, I'd try a mechanical means of repair, such as drill/tap for a couple flush set screws. Some JB Weld couldn't hurt to finish it off. If it works, great, you've got a .22 upper. If not, use it as a paperweight.
Link Posted: 8/5/2011 9:54:55 AM EDT
[#40]
Quoted:
I can't believe this is even being debated. When a crucial structural element for a firearm is clearly broken it should not be used in said firearm unless it's going to be a wall hanger....or you live in Kandahar.


Plenty of Man-Love in Kandahar
Link Posted: 8/5/2011 10:06:30 AM EDT
[#41]
As an EMT i am asking you, please don't do it.  When it fails, someone could be having a real medical emergency.
Link Posted: 8/5/2011 10:57:19 AM EDT
[#42]
Glue? Seriously? I don't mean to be a prick but that is lunacy. Just buy a new one and be done with it.
Link Posted: 8/5/2011 11:39:00 AM EDT
[#43]
Quoted:
Glue? Seriously? I don't mean to be a prick but that is lunacy. Just buy a new one and be done with it.


I was trying to be funny in the title. I don't think anyone caught on though.
Link Posted: 8/5/2011 12:31:38 PM EDT
[#44]
Looks like you just started a junk parts bin.
Link Posted: 8/5/2011 8:49:40 PM EDT
[#45]
Can you silver solder aluminum? High temp hard solder joints are pretty tough, not sure if it can be done on aluminum.
Link Posted: 8/5/2011 9:05:11 PM EDT
[#46]
Quoted:
Quoted:
what happened to it?

Looks like a Panther Claw fail.
Use a clamshell and avoid this scenario especially if you have to torque to the higher end of the range.

+1
Link Posted: 8/5/2011 9:47:18 PM EDT
[#47]
Quoted:
Just say NO to glue and guns...


JB weld will fatigue. That means the more cycles (shots) you put through it, the more it gets disbonded on a microscopic level. A buddy of mine JB welded a broken mirror onto his Harley. It lasted a few minutes, then "vibrated" off.

Epoxies are temperature sensitive. Modulus of elasticity, tensile strength, and creep, all increase as temperature goes up (with most ambient cure epoxies, this starts happening around 100 deg F).

Its your face and your money... decide what you will.

Link Posted: 8/5/2011 10:47:51 PM EDT
[#48]
Aluminum takes a lot of skill to heat. But yea throw it away dude, I just fail to see how its worth the risk
Link Posted: 8/5/2011 11:40:14 PM EDT
[#49]
.22 uppers and conversions do break hammer pins quite frequently.   Everyone in this thread that owns a .22 upper or conversion should remove the fcg in their lower. I think some of you will be in for a surprise.

Link Posted: 8/5/2011 11:47:41 PM EDT
[#50]
If that upper is now dangerous to use for .22 LR, ruger 10/22 receivers must be ticking time bombs!





Oh wait...
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