Description
***In Stock***
The Ultimate Hard-Use 5.56 Bolt Carrier Group:
These aren't designed to be pretty. They're not meant to compete with the gorgeous museum-quality $200+ units that other well-respected manufacturers are putting out. But this is not just another component; built to exceed military specifications, our bolt carrier group is designed to be the hard-use always-performing heart of your AR-15. It just happens to look pretty darn good.
***These are All-Chrome Except for Phosphate Gas Key and Extractor***
-Phosphate Extractor
-Phosphate Gas Key
-Sprinco 5-coil Extractor Spring and Sprinco Ejector Spring
-OCKS Fasteners, Properly Staked
Microbest is one of the finest manufacturers of mil-spec bolt carrier groups for the military and small arms manufacturers. These are individually High Pressure Tested and then undergo a Magnetic Particle Inspection. We recommend degreasing and lubricating before installation. Ships in OEM packaging.
Features:
All-Chrome M-16 BCG, Phosphate Gas Key and Extractor
Mil Spec Carrier
- 8620 Tool Steel
- Full Auto M-16 cut
Mil-Spec Bolt
- C158 Steel
- Shot Peened
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
- Chrome Silicon Ejector Spring by Sprinco
Mil Spec Extractor - PHOSPHATE
- 4140 Steel
- Chrome Silicon Extractor Spring by Sprinco
- Black Extractor Insert
Mil Spec Gas Key - PHOSPHATE
- 4130 Steel
- Optimized Carrier Key Screws (OCKS) provided by Michiguns
- Properly Staked
- Mil-Spec Opening Verified and Optimum Alignment Checked
Weight: 11.6oz
Customer Reviews
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Microbeast Chrome BCG Premium
Nevermind best for the $, this is one of the best BCG's I've ever seen period. I've used just about every well known and high end BCG out there and with the exception of a few (like KAC & LMT that cost literally 5-6×) there's nothing any of them have or do better than these. Everything from the Springco springs, Ocks screws, great staking, and the buttery smooth finish are just incredible for a BCG at this price point. As always arftac was awesome and shipping was extremely fast.
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Premium Hard Chrome Microbest
Sat back and compared my new Microbest to my Sionics NP3. Really don't feel like I can justify spending the extra 100 on Sionics anymore. The coating is just as nice and all the other features that drew me to Sionics are here with the Premium Microbest. Great product
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BCG
I'm pleased with BCG, well made.
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Microbest you're gonna find
Flawless BCG. Just arrived today and I can't find a single imperfection. Buttery smooth inside and out, tolerances exact, passed every test with A+ marks. This BCG will perform for decades to come. Incredible deal, thank you ArfTac!
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Smooth reliable bcg
Love this Microbest chrome bcg. So far I've run about 500 rds through it without a single issue (as it should be) Combine that with the look and ease of cleaning... you got a winner
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Micro best BCG
The only reason I'm giving it for STARS is because I haven't tried it yet but it looks fantastic
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Microbest premium chrome bolt carrier group
Recieved in a timely manner. Absolutely phenomenal condition. Flawless function. Especially appreciate the use of Springco extractor and ejection springs. The phosphate extractor works well without slippage. The utilization of OCKS carrier keys and exceptional staking are icing on the cake. Best deal out there. I don't care about oem markings, I do however, care about function and longevity. This checks both those boxes. I'll be back.
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Microbest enhanced chrome bcg
Great prices for great products! Quick shipping and my dog loves their treats! One of my favorite companies to order from!
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Amazing Value, Superb Staking, Get it !
This BCG is absolutely the best value on the market in my opinion, especially with free shipping and no sales tax outside of Texas. The chrome application is very nicely done. It is not as smooth as NP3 but it is more durable and far less expensive. Don't get me started on the staking, its a thing of beauty , it is perfect , SERIOUSLY. Better than my Centurion & BCM. The Cam-Pin fits nice and snug too. Better than my JP Enhanced bolt. As of this writing , the following info is not listed on this webpage: The gas key is sealed with Permatex/The Cam-Pin is made from 4340/The Extractor is made from heat treated 4140 which is almost nearly as good as 4340. If they add the cryogenically processed Sprinco Gas Rings it will be even more complete. But make no mistake, this thing as is , is in all likelihood best deal on the market , nothing comes close in my estimation . 140 bucs for a chromed Microbest with Sprinco springs and Ocks screws is just WILD . This is the way.
