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Posted: 8/28/2004 6:14:44 PM EST
Will a post ban upper fit on a pre ban lower? Center to Center dimentions the same, but only pin diameter different? Use Bushings or what? Thanks
Link Posted: 8/28/2004 6:36:23 PM EST
HUH? I don't know what you are talking about except maybe on some large hole Colt issues. They will just drop right on. No adapter or anything.

IDHunt
Link Posted: 8/28/2004 7:13:07 PM EST
The only problem you'll have is if, as stated about, you have one of the older colts with large pins OR you have an el cheapo upper that is out of spec. (or lower for that matter)

Otherwise it should fit.
Link Posted: 8/30/2004 12:03:03 PM EST
Thanks. Kinda new to the AR-15/M16 board and kinda thought the pre-ban uppers and the post-ban uppers had different pin sizes to prevent interchangeibility.
Link Posted: 8/30/2004 1:57:37 PM EST

Originally Posted By Rockrat:
Thanks. Kinda new to the AR-15/M16 board and kinda thought the pre-ban uppers and the post-ban uppers had different pin sizes to prevent interchangeibility.



only if they're Colt.
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