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Old 09-02-2013, 03:21 PM   #11
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bushmasters are normally way over gassed and this leads to greater wear on the internals. only fix for that is a different barrel.
How about an adjustable gas block on the stock barrel?
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Old 09-02-2013, 03:28 PM   #12
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How about an adjustable gas block on the stock barrel?
I was just looking into that as an option. Opinions/ideas?


On a separate note:
I think having a spare BCG on the shelf is a good idea, I also have
several spare parts kits as I have multiple AR's.
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Old 09-06-2013, 07:33 PM   #13
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BCM $190 best service type

PSA $150 Premium second best option

An adjustible gas block will help with over gassing problems or try tuning your system with a heavier buffer (its cheaper and easier to do this) I would highly recommend buying one of the aforementioned BCGs just as a backup. A word of warning tho...these BCGs tend to get lonely and cold, so you might wanna wrap them up in a nice set of recievers...just to keep it safe........
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Old 09-07-2013, 01:43 PM   #14
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How about an adjustable gas block on the stock barrel?
that would work. but the issue with a lot of those is the gas port adjustors can move.

your not liekly to wear out enough gas rings to offset the costs and hassle of finding one that works. just keep some on hand and check em using the stand the bcg on the bolt test after a cleaning.
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Old 09-07-2013, 03:43 PM   #15
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Want a B+ grade BCG for a D- price? Here it is. PSA 8620 M16 $79.99.

Is an 8620 bolt the top-flight standard? Nope. But it's generally good enough. It was the standard not so long ago, and will be equal to the challenge most shooters demand from their ARs. Good product, probably worth $150 when considering the 'real value' vs most other BCGs out there. Viable option for anyone looking for an affordable spare or attempting to upgrade a 'big box store' (DPMS, Bushmaster, S&W, etc) AR15.

This is a solid BCG. I would not choose it for my go-to $1500 setup+, but it'd be fine in the previously mentioned roles (minor upgrade, spare, or driving a $700-900 build). It can be the ideal spare at about $87 delivered. I've used a couple of these for builds and have been pleased with the quality throughout.
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Old 09-07-2013, 07:45 PM   #16
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Quote:
Originally Posted by JonM View Post
that would work. but the issue with a lot of those is the gas port adjustors can move.

your not liekly to wear out enough gas rings to offset the costs and hassle of finding one that works. just keep some on hand and check em using the stand the bcg on the bolt test after a cleaning.
Thanks for all the input on this, I learned and that is good. I decided to
purchase the BCM BCG. Did so a few minutes ago and a AR gunsmithing
book with it by Dean Caputo.

My next Brownell's order will have more gas rings on it.
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