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9/22/2017 12:11:25 AM
Posted: 8/20/2005 5:56:36 PM EDT
[Last Edit: 8/20/2005 6:02:48 PM EDT by weptek911]
My late Brother-in Law left me an unfired Colt SP1 AR 15. At a gunshow I found a pristine Colt CAR SP1 16" shorty upper that now lives on top of the Colt lower.

Not really able to sell it for sentimental reasons, I found myself with an extra Colt SP-1 upper . It seemed a waste to have it sitting around so I built up a Rock River Arms lower and put the original 20" SP1 upper on it with an off-set small/large hole conversion pin. I'm not really hapy with the conversion pins as it just doesn't open easy and seems to fit oddly.

I would like to get a 16" flat top M4gery type upper with a vertical grip of some sort for the RRA and maybe down the road find a lower that would be a better fit for the Colt 20 inch upper.

Two questions; Based on the fact that I'm not going to use these professionally, just target shooting and home defense.

Who makes a reasonably priced 16" flat top with provision for a vertical handgrip ?>

Who makes an old-school A1 AR-15 lower that works with the original SP1 type pins?.



Thanks in advance.




Link Posted: 8/20/2005 6:30:07 PM EDT
Link Posted: 8/21/2005 6:18:01 AM EDT

Originally Posted By weptek911:
Who makes an old-school A1 AR-15 lower that works with the original SP1 type pins?.



You'll have to get another large-hole Colt lower, as you have no other options.

See how they multiply? You bought an extra upper, now it needs a lower. Just like rabbits, I say.
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