This is only pictures and a comparison. There are tons of durability reviews if you do a search.
MicroBest is the OEM for many big name manufacturers. BCM, SOLGW, etc. They offer a bunch of configurations in a handful of finishes. This is the all chrome, C158 variant. It also comes in Phosphate and Nitride. The chrome option is available with different material extractors and gas keys as well as unique fasteners and Sprinco springs. These carriers run anywhere from $90 in phosphate up to $165+ in chrome with different options.
This is the base MicroBest chrome finish with C158 bolt BCG and I planned on installing Sprinco extractor spring and gas rings. When I took it apart I found a 5 coil CS spring and heavy gas rings. I believe they are Sprinco but the BCG was not listed as containing such and I can't prove they are Sprinco. I did not change them as a result. I paid $118 shipped to my door.
I have a Brownells chrome BCG that I purchased last year. I do not believe it is made by MicroBest. It was listed as having a 9310 bolt. The markings are lasered instead of engraved like MicroBest. The original extractor spring and rings were pretty soft so I changed them to Sprinco. I paid $90 for the Brownells BCG, they are now listed for $120. I would choose the MicroBest over the Brownells but there is nothing wrong with the Brownells and will continue using it. The Brownells BCG has maybe 150 rounds on it.
The last picture is a bolt face comparison of the Brownells BCG, MicroBest BCG, and a no-name BCG I bought for $40 five or six years ago. The no-name part is likely Chinese; it is out of spec in every way possible. You can see how bad it is with the naked eye looking at the lugs alone.
I believe the MicroBest branded BCGs to be the best value options on the market today. I have been using their phosphate BCG's for many years. The chrome options are the sweet spot for quality, finish, and value. Everything you need, nothing you don't. If you do a web search for "chrome microbest bcg" you get tons of options at very good prices. I hope this helps.
I can't insert pictures, only add them. The MicroBest is all chrome and new, the Brownells has phosphate fasteners and is used.
MicroBest is the OEM for many big name manufacturers. BCM, SOLGW, etc. They offer a bunch of configurations in a handful of finishes. This is the all chrome, C158 variant. It also comes in Phosphate and Nitride. The chrome option is available with different material extractors and gas keys as well as unique fasteners and Sprinco springs. These carriers run anywhere from $90 in phosphate up to $165+ in chrome with different options.
This is the base MicroBest chrome finish with C158 bolt BCG and I planned on installing Sprinco extractor spring and gas rings. When I took it apart I found a 5 coil CS spring and heavy gas rings. I believe they are Sprinco but the BCG was not listed as containing such and I can't prove they are Sprinco. I did not change them as a result. I paid $118 shipped to my door.
I have a Brownells chrome BCG that I purchased last year. I do not believe it is made by MicroBest. It was listed as having a 9310 bolt. The markings are lasered instead of engraved like MicroBest. The original extractor spring and rings were pretty soft so I changed them to Sprinco. I paid $90 for the Brownells BCG, they are now listed for $120. I would choose the MicroBest over the Brownells but there is nothing wrong with the Brownells and will continue using it. The Brownells BCG has maybe 150 rounds on it.
The last picture is a bolt face comparison of the Brownells BCG, MicroBest BCG, and a no-name BCG I bought for $40 five or six years ago. The no-name part is likely Chinese; it is out of spec in every way possible. You can see how bad it is with the naked eye looking at the lugs alone.
I believe the MicroBest branded BCGs to be the best value options on the market today. I have been using their phosphate BCG's for many years. The chrome options are the sweet spot for quality, finish, and value. Everything you need, nothing you don't. If you do a web search for "chrome microbest bcg" you get tons of options at very good prices. I hope this helps.
I can't insert pictures, only add them. The MicroBest is all chrome and new, the Brownells has phosphate fasteners and is used.
Attachments
Last edited:
