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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 8/22/2005 9:58:56 AM EDT
I recently aquired an aged SP1 that seems a little loose for my taste between the upper and lower. The front take-down pin seems to be what is loose. Wondering if anyone sells replacements, or if I have to order one from colt. thanks.

-mark
Link Posted: 8/22/2005 11:02:08 AM EDT
Link Posted: 8/22/2005 11:25:37 AM EDT
[Last Edit: 8/22/2005 11:36:27 AM EDT by MauserMark]

Originally Posted By j3_:
www.dpmsinc.com/10Expand.asp?ProductCode=LR-CP



www.specializedarmament.com/



Doubt it will help. mine was loose new.



did you try either of these pins?

I ordered the .315" pushpin version from Brownell's, might as well give it a shot, was $13.50.
Link Posted: 8/22/2005 11:47:30 AM EDT
[Last Edit: 8/22/2005 11:49:21 AM EDT by j3_]
Never tried any other brand pins except one of those with the one ball bearing in it and it was looser.
KNS makes one with a release button and two or three bearings on it. And there is one out that has a sling attachment also.
Link Posted: 8/22/2005 12:56:09 PM EDT

Originally Posted By j3_:
Never tried any other brand pins except one of those with the one ball bearing in it and it was looser.
KNS makes one with a release button and two or three bearings on it. And there is one out that has a sling attachment also.



that's the one I ordered, KNS, we'll let you know how it works.
Link Posted: 8/22/2005 4:06:53 PM EDT
[Last Edit: 8/22/2005 4:07:38 PM EDT by shamayim]

Originally Posted By MauserMark:

Originally Posted By j3_:
Never tried any other brand pins except one of those with the one ball bearing in it and it was looser.
KNS makes one with a release button and two or three bearings on it. And there is one out that has a sling attachment also.



that's the one I ordered, KNS, we'll let you know how it works.



Works good, but it is unlikely to solve your problem. If you have the original two screw head pin in your rifle right now, and the thing is loose, it's unlikely that the steel pin wore. Far more likely that the holes in the upper and lower became enlarged over time. Ditto on any side to side looseness.

On the other hand, ARs and M16s have developed loose front hinges since day one, and still worked and shot just fine.
Link Posted: 8/23/2005 5:49:10 AM EDT
[Last Edit: 8/23/2005 5:52:17 AM EDT by MauserMark]

Originally Posted By shamayim:

Originally Posted By MauserMark:

Originally Posted By j3_:
Never tried any other brand pins except one of those with the one ball bearing in it and it was looser.
KNS makes one with a release button and two or three bearings on it. And there is one out that has a sling attachment also.



that's the one I ordered, KNS, we'll let you know how it works.



Works good, but it is unlikely to solve your problem. If you have the original two screw head pin in your rifle right now, and the thing is loose, it's unlikely that the steel pin wore. Far more likely that the holes in the upper and lower became enlarged over time. Ditto on any side to side looseness.

On the other hand, ARs and M16s have developed loose front hinges since day one, and still worked and shot just fine.



Thanks for the feedback.

Yeah, I figured the pin may not make a difference, but I realized I need it anyway. This is the first colt I've owned and holding one screw with a tool, while unscrewing the other just to take the upper off is a pain, and since I always seperate the upper from the lower when cleaning, thought it would make life easier.

the seller said it kept tight groups the last time he shot it, I checked it again last night and realized it actually wasn't as bad as I made it out (the looseness). But it's more loose than the DoubleStar/M16A1 upper build I put together recently, but that can be expected. Gonna take it out today, will post pics and a range report, guess we can go from there if the accuracy isn't any good.

-mark
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