Microbest

Microbest AR15 5.56 C158 MPI All-Chrome Bolt Carrier Group, Premium

31 reviews Write a Review
MSRP: $199.99
$139.99
You save $60.00
*IN STOCK SOON*
Microbest AR15 5.56 C158 MPI All-Chrome Bolt Carrier Group, Premium
Microbest AR15 5.56 C158 MPI All-Chrome Bolt Carrier Group, Premium
SKU:
MB-BCG-556-CHR-ACP-PREMIUM
MPN:
MBEST-BCG-556-CHR-ACP-PREMIUM
Maximum Purchase:
3 units
Current Stock:

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Description

***In Stock Soon***

 

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

31 reviews

  • 5

    Microbest chrome premium bcg

    Posted by R. Perez on 29th Aug 2024

    100% satisfied with this bcg and the customer service from ARFTAC. Works great in my S&W M&P 15. Ordered on a Friday and got to my house the next Monday. I'll be ordering a second Microbest chrome premium bcg for my Ruger as soon as one is back in stock. Thanks ARFTAC and Microbest.

  • 5

    The Best Bolt Around

    Posted by Anthony on 6th Aug 2024

    This bolt is a must if you want the best turn key bolt out there. The finish from MICROBEST is the best. Hard Chrome is very hard to find today and the finish is the strongest out there holds lubricity very well. Even the springs come are high quality. If you're looking for a bolt that will last 2 life times this is your bolt!

  • 5

    Chrome BCG is best BCG

    Posted by O.Ma on 12th Jul 2024

    Microbest chrome BCG with phosphate extractor and Sprinco 5-coil extra power extractor springs. So far 200 rounds in and it's performed flawlessly. Clean before 1st use, lube properly and it should run well. Can't recommend any other BCG since this one is as close to perfect as possible. SOTAR recommends dimpled cam pins so the cam wears evenly by knowing which direction to reinstall for even wear. Easy fix: use sharpie or oil based marker to write a dot on cam pin so it's reinstalled facing same direction after every cleaning.

  • 5

    MICROBEST AR15 5.56 C158 MPI ALL-CHROME BOLT CARRIER GROUP, PREMIUM

    Posted by Chuck Ardizzone on 8th Jul 2024

    Haven’t had a chance to go to the range to test it out, but fit and finish are great and if it is like my other Microbest BCG there shouldn’t be any issues

  • 5

    Microbest BCGs

    Posted by WILL HOUSER on 28th Jun 2024

    As usual Arftac comes through w/ good stuff at a fair price and quick deliveries. Will be ordering more soon.

  • 5

    Gucci BCG at Trailer Park Price

    Posted by Jim on 14th Jun 2024

    I've got two of these I'm running in SBR builds that are also dedicated suppressed. They're incredibly gas efficient. Add in OCKS and Sprinco and you'd be stupid to spend more on a BCG. I know because I did.

  • 5

    Microbest Chrome BCG

    Posted by Unknown on 20th May 2024

    The order was processed and shipped quickly and the packaging was great. While I haven't checked the dimensions of this BCG yet, the quality looks to be excellent. If anything happens to be off (seems unlikely), I'll update this review. It's nice to see ARFTAC carrying real-world products such as this BCG, instead of concentrating on big names.

  • 5

    Premium bcg

    Posted by Kevin Jones on 13th May 2024

    This bcg has features that High end companies use its a premium product extremely well built should last a long time

  • 5

    Fast shipping, great product

    Posted by Levi on 3rd May 2024

    I ordered on a Friday and received the item by Monday. Haven't gotten to use the bcg yet, but it looks great and will definitely be an upgrade to my current bcg.

  • 5

    Microbest all chrome BCG Premium

    Posted by Phil on 1st May 2024

    Don't be hesitant to purchase anything from this company. Their customer service is always there and stand behind all products they sell 100%

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