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  #1  
Old 06-21-2018, 10:15 PM
SandBlastedSkin SandBlastedSkin is offline
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Default Original Colt SP1 Damaged

I was recently gifted an original Colt AR-15 SP1 (R6000) by my grandfather that has only 60 rounds fired through it, and other than the severe bend in the carry handle, is in stellar condition.

How can I fix this? If I can't, can a gunsmith? And lastly, should I fix this? I'm not sure I want to tamper with it. I plan on keeping it well into the future and only put a few rounds through it.

Thanks
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  #2  
Old 06-22-2018, 12:46 AM
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You can try straightening it with a crescent wrench, but in my experience, forged aluminum that has been bent like this will crack when you attempt to straighten it back to where it was before.

The best fix is to chase down an old original upper reciever and swap all your parts over to the replacement reciever.
There are 1000's of those old SP1 receivers sitting in people parts bins after flattop receivers came on the market.
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Old 06-22-2018, 12:59 PM
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I hope that's not in calif.
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  #4  
Old 06-22-2018, 3:02 PM
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His location states, "Land of the free." Chances are it's not California.
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Old 06-22-2018, 9:22 PM
SandBlastedSkin SandBlastedSkin is offline
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I thought the upper was made out of steel, but I suppose it is made of aluminum because the rifle is really quite light.

How much would swapping the upper devalue the firearm? I was hoping to keep it as original as possible.
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Old 06-22-2018, 9:26 PM
jericho89 jericho89 is offline
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Quote:
Originally Posted by ar15barrels View Post
There are 1000's of those old SP1 receivers sitting in people parts bins after flattop receivers came on the market.
I always likes the a1, but people want stupid money for them... $250 for a stripped upper is stupid.
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Old 06-22-2018, 10:44 PM
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Fulton Armory and Nodak Spud have "slick side" (no forward assist) uppers.
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Old 06-23-2018, 1:31 AM
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Quote:
Originally Posted by SandBlastedSkin View Post
I thought the upper was made out of steel, but I suppose it is made of aluminum because the rifle is really quite light.

How much would swapping the upper devalue the firearm? I was hoping to keep it as original as possible.
Both receviers are aluminum.
If you use the identical upper reciever, it's not really possible to tell that it has been swapped out.
The gun does not have a higher intrinsic value from being original vs just being what it is.
If it did, it certainly loses more value from the damage than from a receiver swap.
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  #9  
Old 06-23-2018, 9:47 PM
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Quote:
Originally Posted by SandBlastedSkin View Post
How can I fix this? If I can't, can a gunsmith? And lastly, should I fix this?
If you have an A-List gunsmith who is proficient in working on high-end restorations, then yeah, give it to him. If your guy is a glorified gun store salesman with a file and a bottle of cold blue, then you're better off doing it yourself.

If I was going to work on something like that, I'd clamp the handle to a flat surface, as a backup. Then I'd use a hardwood dowel, perhaps ground to fit the space in the handle, then beat it into shape.

Depending on how things go, and how it looks from the outside, perhaps you'll want to "overbend" the piece just a hair, then file it down so there are no dents visible from the outside. You might end up with blemishes on the inside, but they won't be as noticeable. You might need to recolor with some kind of liquid product. It won't match exactly, but it might just be to your liking.

If the experiment turns to muck and you break the ear off, it's not the end of the world. You can fabricate a replacement from a piece of flat aluminum, and then solder it into place with any of the newfangled aluminum-soldering products. You can use some heat-dam putty to keep the heat from radiating far from the area of the repair. Finishing will be with a file, and it will look perfect if you take your time. Again, you'll need to do some refinishing.
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  #10  
Old 06-24-2018, 7:17 AM
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Broken is worse than bent. Does not affect function.
I would just leave it as is, shoot and enjoy.

irh
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  #11  
Old 07-04-2018, 10:42 AM
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Quote:
Originally Posted by ar15barrels View Post
If it did, it certainly loses more value from the damage than from a receiver swap.
This is a really good point. Does anyone have an idea on where I could start looking for a spare original SP1 upper receiver?
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  #12  
Old 07-04-2018, 12:32 PM
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Quote:
Originally Posted by SandBlastedSkin View Post
Does anyone have an idea on where I could start looking for a spare original SP1 upper receiver?
Gun shows, ar15.com or the marketplace here.
Lots of people have them sitting in scrap bins.
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  #13  
Old 07-05-2018, 1:02 AM
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https://www.tntesales.com/604-a1-sla...iver-stripped/
I think DPMS makes new ones as well. Nodac spud probably makes them as well or at least C7 uppers (pretty much the same as you SP1 but with a shell deflector.)
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  #14  
Old 07-16-2018, 2:04 PM
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Default SP1 uppers

There are lots of SP1 takeoff uppers around, Check Gunbroker. Then sell your old one after the swap. Swapping is easy for a gunsmith.
ETA: the aftermarket new ones may be anodized the new dark black, make sure you get an old COLT Gray takeoff so it matches.
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  #15  
Old 07-18-2018, 6:31 AM
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Ask this guy, he does great restorations.

http://www.retroarmsworks.com/
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  #16  
Old 07-18-2018, 8:38 AM
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Probably a "large pin" upper too, worth noting.

SP1: https://www.gunbroker.com/item/779665993
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  #17  
Old 07-18-2018, 12:27 PM
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Good luck with the restoration, it is worth the effort. I love fixed carry handle AR's. I cut my teeth on one in Army BCT many years ago.
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  #18  
Old 07-19-2018, 8:42 AM
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Quote:
Originally Posted by SandBlastedSkin View Post

How much would swapping the upper devalue the firearm? I was hoping to keep it as original as possible.
Swap out the stripped upper, but keep the old one. Devaluation problem = solved.
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  #19  
Old 07-20-2018, 2:32 AM
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Randall, was it you that told me freezing it softens aluminum for bending vs heat with steel?

Someone told me that a long time ago- I've never tried it. haven't had a need to do it yet

It was on the subject of people bending their trigger guard tabs on AR lowers.

-Dave
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  #20  
Old 07-20-2018, 10:11 AM
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Quote:
Originally Posted by saki302 View Post
Randall, was it you that told me freezing it softens aluminum for bending vs heat with steel?

Someone told me that a long time ago- I've never tried it. haven't had a need to do it yet

It was on the subject of people bending their trigger guard tabs on AR lowers.

-Dave
Not me.
I have never heard anything like that.
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  #21  
Old 07-21-2018, 7:10 PM
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I would clamp a piece of angle iron in a vise put a piece of wood on top of that and then do a little light tapping with a dead blow hammer and see how much you could straighten that out.
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