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

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• 5

  Small problem, Arftac handled it

  Posted by cs on 9th Sep 2023

  This carrier seemed great. 7 7/16 length, good gas rings, clear gas path, good ejector spring tension, great firing pin protrusion (0.31), good coatings, good bolt support shoulder. The extractor spring and insert was crushed and bent upon inspection. Unsurprisingly, Arftac replaced them. Great carrier. Arftac rules

• 5

  Micro best Chrome bolt carrier group

  Posted by Steve on 28th Aug 2023

  Super clean piece from ARF tech No frills packaging but all frills product. Best price in the game let him know I have three dogs and he sent three treats that smelled so good I almost ate one.

• 5

  Microbest AR15 5.56 C158 MPI Bolt Carrier Group

  Posted by Rich N on 17th Aug 2023

  Picked up numbers 3 and 4 of the all chromed BCG's The pricing and quality of these parts are hard to beat,plus these guys ship fast. What's not to like?

• 5

  Best Value Microbest HPT/MPI BCG

  Posted by Jordan on 12th Aug 2023

  Take guy below review with a huge grain of salt. Anyone who knows about Microbest phosphate BCGs is that most, but not all, have the chrome overspray at front of carrier. Some don’t like BCM, but DD, SOLGW, Sionics, some batches of Centurion, and now this from arftac do have the that extra chrome on the front of the carrier. That is what tells you it’s Microbest without fancy packaging or engravings. What I received was clearly Microbest, and the cherry on top was that it already had a 5-coil Sprinco extractor spring. Aside from engraving, matches my DD, Sionics (minus OCKS), and unmarked MB from Charlie’s custom clones exactly. At $60-$120 less for same individually tested bolts used. Seriously, this is a no-brainer, and perfect to have as spares. If no packaging or engraving is problematic for you, please leave the rest of arftac’s stock for those of us who know better. Probably ordering another one just because.

• 3

  Microbest BCG

  Posted by Ray on 8th Aug 2023

  The vendor says it’s a Microbest, but there was no packaging, and no markings that identify the BCG. They said it is 158 carpenter steel, but is it really? How would you know? If I sell this BCG, how do I convince the buyer that this is a Microbest? From arftac: We ship in OEM packaging as the description says since Microbest is an OEM manufacturer. We will soon offer a branded product with markings for those that want it, but that will be more expensive and this was spec'ed to be a tremendous value in an unmarked, lifetime warranty BCG. We source these directly from Microbest if there's any question about that, and we take their word on the C158 as we do with every other vendor we source from when we spec certain features.

• 5

  Microbest BCG

  Posted by Adam on 7th Aug 2023

  Really, really nice fit and finish. Want to buy a second one now.

• 5

  New BCG

  Posted by Matthew on 11th Jul 2023

  The BCG looks great. Surfaces look clean and staking looks great too. I haven’t had a range trip yet but I’m sure it’s good to go. I do hope the chrome extractor isn’t an issue but if it is I’m sure I can swap it for a phosphate extractor. Mostly I’m just very very pleased with the folks at arftac. Customer service is top notch, shipping was ridiculously fast especially for a holiday weekend, and I am so happy to know about arftac. Thank you. 10/10 recommended

• 5

  Great BCG

  Posted by RobertB on 9th May 2023

  I already know how good Microbest BCG's are, which is why I bought it. But the real 5 stars goes to Arftac for great service, communication, and on-time fast shipping. Keep up the good work folks

• 5

  Top Tier BCG

  Posted by Matt D on 10th Apr 2023

  Chrome finished BCG. Microbest is a top tier BCG. The chrome finish is easy to clean and strong. Easy install and after a headspace check and a lube, went to the range and put a couple hundred rounds down range with no issues.

• 5

  Microbest phosphate

  Posted by Citizen on 25th Mar 2023

  The best bcg period!