12-12-2014, 08:00 AM
LRRPF52 Wrote:When I had this conversation with Bill A., he said 50% of the rifles exceeded his expectations off the bat, while the other half didn't, even when they were all assembled with the same components. We're talking 20" and longer guns. After some head scratching and research, he decided to try the Red Loc-tite on the blocks, and all of a sudden they tightened up to sub-MOA.
This was across a large enough fleet sample to be conclusive for him at least. I know Les Baer Red Loc-tite's the crap out of his guns, and they are very accurate as well.
To get the blocks off, I just apply heat with a heat gun, not open flame, and can smell when the compound goes liquid. I insulate the barrel, use a lot of thick tape and leather, then pound the block off with a large brass piece and a hammer.
How many rifles are we talking about? You are talking in percentages which implies a subset of 100 or more. As you know any sample size of less than 100 is communicated by the actual number to avoid unreasonable assumptions (e.g. 'one out of two guns tested' instead of '50% of the guns tested').
If true and statistically valid this is an extraordinary revelation with industry-wide implications. If half of all (long barreled) AR's can have the accuracy noticeably improved by something as simple as gluing the block. All gun assemblers will be doing it and it will become common knowledge on AR forums.
That said, I will leave the glue in the drawer until it is more than just anecdotal.