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Posted: 3/16/2006 9:38:38 PM EDT
Does Oly style uppers work with both a lower with a top-loading Hahn block with Promags?


I might have a line on a pistol upper from Olympic Arms, but need to know if it will work with a Hahn block using Promag style mags.

Link Posted: 3/16/2006 11:46:13 PM EDT
I'm not 100% sure, but I don't think so.

Link Posted: 3/17/2006 3:47:06 AM EDT
Why do you want to use a Hahn block?
Link Posted: 3/17/2006 8:08:48 AM EDT
In an Oly system, the mag is foreward in the magwell where as in the Colt system the mag is in the middle of the magwell. The blocks for the Colt have feedramps, where-as the Oly does have. The chambers and barrels are a bit different also.

Link Posted: 3/17/2006 9:14:38 AM EDT
Aren't the Hahn blocks stritcly for a Colt/RRA system?
Link Posted: 3/17/2006 11:21:11 AM EDT
Hahn makes adapters for both Oly and Colt systems.

Magazines do not interchage between the two uppers......Oly=single feed.......Colt=double feed.
Link Posted: 3/17/2006 1:56:39 PM EDT
thanks guys, I will leave it alone and stick with the colt/rra system.
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