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BOLT CARRIER ASSEMBLY, AR-15/M16, 5.56 NATO, AUTO, MIL-SPEC, POLISHED NICKEL BORON

Wilson Combat
SKU:
TR-BCA-PNIB
$216.95
(5 reviews)
Current Stock:
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Wilson Combat

The polished Wilson Combat Bolt Carrier Assembly for 5.56 NATO is the perfect solution for any shooter who needs rugged dependability in their rifle. 

Experience optimal reliability and performance in your rifle when you choose the Wilson Combat Bolt Carrier Assembly for your 5.56 NATO rifle. This robust solution ensures rugged dependability, no matter the conditions. This bolt carrier assembly features a polished nickel boron coating and is precision machined from aerospace-grade 9310 tool steel, making it incredibly tough. The hardened steel 8620 carrier also features forward assist cuts for added reliability. Additionally, the gas key is properly staked to ensure it won't fail at the most inopportune moment. This bolt carrier assembly is used in Wilson's fully-built rifles and will provide unbeatable performance and durability for any shooter who needs dependability they can trust.

  • Drop in fit for any quality 5.56 case head based AR rifle (.223/5.56 NATO, .300 Blackout, .204 Ruger, 300 HAM’R or 7.62X40 WT)
  • Polished nickel boron coating provides easy clean up and corrosion protection 
  • Precision machined from aerospace-grade 9310 tool steel for toughness
  • Hardened steel 8620 carrier features forward assist cuts 
  • Properly staked gas key ensures reliable performance 
  • Machined ejector and extractor
  • Used in Wilson's fully-built rifles for optimal performance and durability

NOTE: The only difference between “semi-auto” and “full-auto” carriers are the carrier weight and external profile. The “full-auto” carrier is slightly heavier to provide more mass and lower cyclic rate that can benefit carbine length and shorter gas systems, short barreled/suppressed rifles and machine guns. The “semi-auto” carrier is slightly lighter to provide the least amount of recoil impulse for rifle length gas systems and it's design makes reinstalling the firing pin easier after cleaning.

Reviews

  • 5
    Absolutely the best

    Posted by Miller on Nov 28th 2025

    This is Sweeett. I have one in all 3 of my Ar’s. Bravo.. Springfield Saint Gen 1 and my Windham Mpc. Never Not One Issue… No Jams FTE ..FTF NEVER NEVER NEVER …..With Thousands of rounds through each ….. ????????????????

  • 5
    High quality machining, sometimes you get what you pay for.

    Posted by LostOak on Apr 17th 2025

    I have a 350 Legend that has been plagued with cycling/feeding problems from day one. I tried everything and it did get better but would still jam at least once on every mag. long story short I decided to give this BCG a try and poof like magic no more issues. I burned through 200 rounds with zero issues. If you have a 350 Legend with cycling issues and you have tried everything else, try one of these BCG. I couldn't be happier my gun finally runs. I've wanted to try one of these for a long time but thought they were to expensive. I was wrong sometimes you need to pay a little more for a quality product. Thank you Wilson!

  • 5
    Work Of Art

    Posted by Patriot Pat on Nov 2nd 2021

    Hard to find item,.and once you receive you see why. Another WC masterpiece. I snagged one while in stock

  • 5
    Best Looking Bcg I'Ve Seen

    Posted by Josh on Feb 12th 2021

    WOW. Wilson Combat did not disappoint. The finish and quality of this BCG is the best I've seen. I like that it comes with one piece gas rings.

  • 5
    Amazing Craftsmanship/Superior Bcg

    Posted by Asa on Mar 28th 2020

    I bought this WC BCG in good faith and I was not displeased with my purchase. This BCG is truly a game changer for any AR-15 build. It completely changes the way the rifle fires and operates. I literally went shooting one day without cleaning my rifle and it still fired every round without a single hiccup. Superior quality compared to Lantac and I own a Lantac BCG. This will be my first and only choice for all my builds in the future. Thanks Wilson Combat!