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Page AR-15 » AR Discussions
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Archived [ARCHIVED THREAD] - Upper Receiver Block for Noreen Uppers?
Posted: 6/23/2017 1:46:10 AM EDT
Anybody recommend one that fits, or do they all fit?

I notice the Brownell's ad says theirs isn't to be used with billet uppers.
Link Posted: 6/23/2017 1:58:37 AM EDT
[#1]
Receiver blocks are a bad idea anyways. No, blocks meant for mil spec forged uppers won't fit any odd shaped billets. Just use barrel blocks.

Link Posted: 6/23/2017 2:07:46 AM EDT
[#2]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Receiver blocks are a bad idea anyways. No, blocks meant for mil spec forged uppers won't fit any odd shaped billets. Just use barrel blocks.
View Quote
OK, that makes sense...except what about the barrel contour?  Doesn't the barrel contour have to mate with the blocks perfectly?


Would a reaction rod be superior to both or is there a downside to that?
Link Posted: 6/23/2017 2:32:53 AM EDT
[#3]
A lot of people will say a reaction rod is the best. Blocks work though. I've used my aluminum blocks on barrels that were slightly larger than the profile of the block, only the edges touched, it still worked.

Archived [ARCHIVED THREAD] - Upper Receiver Block for Noreen Uppers?
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