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7/19/2013 8:47:30 AM EDT
Hi all -

What is involved in swapping an old, circa 1990, Colt Sporter lower receiver with a new Colt lower and vice versa. I'm told the only thing different is the front pin. Decided to check with the experts here.

Thanks.
7/19/2013 9:08:42 AM EDT
[#1]
Large hole adapter

Get one of those for your large hole upper and you are good to go...

7/19/2013 10:11:53 AM EDT
[#2]
Cool. Thanks.

So that puts a new upper on my old lower. Anything to put the old upper on a new lower?
7/19/2013 10:46:24 AM EDT
[#3]
Quote History
Quoted:
Cool. Thanks.

So that puts a new upper on my old lower. Anything to put the old upper on a new lower?
View Quote


Actually, what he linked will put your old upper on your new lower.  To put a new upper on your old lower you'd need one of these:

Large hole offset pin
7/19/2013 11:50:21 AM EDT
[#4]
Great, thanks.

I guess that takes care of both ends of the problem.
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