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AR15.COM
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2/23/2017 8:40:50 PM EDT
Found this upper locally could not pass it up.  I have been interested in a 604 build and thought this would be a good candidate.  Let me know what you think.



2/23/2017 9:12:00 PM EDT
[#1]
They are hard to pass up. You have to start somewhere.
2/23/2017 9:39:16 PM EDT
[#2]
Yes that will work. Looks like a Colt SP1 from the large front pivot pin hole. You will need to get a bushing to make it fit standard lowers. Nice upper!
2/23/2017 9:39:18 PM EDT
[#3]
Nice find. I got a similar upper off a SP1 but it doesn't have the sight parts and those are impossible to find right now so its good that your upper has them!
2/24/2017 6:32:54 AM EDT
[#4]
Quote History
Quoted:
Nice find. I got a similar upper off a SP1 but it doesn't have the sight parts and those are impossible to find right now so its good that your upper has them!
View Quote
Amherst Depot has them available on Gunbroker.

http://www.gunbroker.com/item/623226832
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