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Posted: 8/31/2006 8:08:15 PM EDT
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Has anybody ever modified the large pin hole receiver on a Colt in order to make it campatible with all uppers? Can it be done? I know there is an offset pin available but all consulted tell me its a clumsey fix. What about filling & redrilling the lower receiver???? Thanks |
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Thx, what about the "detent spring & retainer" ? Do you have to have tension against the offset pin as well? http://home.grandecom.net/~mbixby/AR15_Sporter005.jpg |
Exactly what I did w/my SP1  The offset inserts are made by DPMS and only cost a couple of bucks. They're small enouigh on the outside to allow you to coat them w/an epoxy putty and slide them in. They're long enough to either fit a big hole upper, or trim them for the holes on a lower. If the lower is a total smooth side, like mine, you can use either the KNS or DPMS front pins, which are held in w/spring loaded balls on the left side of the pin. My experience is that the KNS version is a bit more secure in retention, but the DPMS looks more "original". Thanks for the pix, XM177. I can't post pics right now, since I don't own a digital camera; and had been wanting to show what I've done. Will probably refer folks to yours.
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I guess I should have been more specific when I posted the pic. That is not mine, it is a service proved by C2 M60JOE. www.m60joe.com He machines a custom insert, then pins it from the bottom. |
Oh yeah. now I see the pin holes. Well, if you've got the bucks that might be a better way to go; but so far my epoxied in sleeves are holding up just fine, for a grand total expense of about $6.
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