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Lead & Steel ARC C158 Grit Cutter Bolt Carrier Group – TiN, 5.56mm/.300BLK, Individual HP/MPI BCG

SKU: ARC-BCG-SC-TIN
5.00 out of 5
(1 review)

Original price was: $349.99.Current price is: $189.99.

In stock

In Stock

  • Individually Proof Tested

    The ARC bolt is individually proof tested and mag particle inspected with an inner diameter bolt run that is machined tighter than competitor offerings.

  • TiN Finish

    Featuring gas nitride submersion inside and out, plus an exterior DLC/TiN coating, our coating ensures rust-proof protection and extended longevity.

  • Extractor Service Life

    Our extractors are billet machined 4140 and manganese phosphate coated to retain grip against the casing rim, and utilize genuine Sprinco 5 coil extractor springs with rubber insert for added reliability and service life.

  • Chrome Lined Gas Key

    Our machined chrome lined gas key sealed against the carrier with Permatex gasket sealant and is affixed with our OCKS fasteners at 53 in/lbs w/thread locker.

  • Sand Cutter.

    Designed for reliability, our sand cuts feature intentional debris channels that prevent material from interfering with the carrier and upper receiver even in the presence of dirt, sand, mud, or carbon build-up.

  • Extended Carrier Cuts/Rails.

    Enhanced stability providing greater lateral support and elongating the contact distance within the upper receiver ensures a more secure fit, especially under violent reciprocity and when running suppressed.

  • Belly Relief Cuts.

    Belly relief cuts make magazine insertion smoother, especially for metal and aluminum magazines. This design allows for extra clearance, ensuring the top of the magazines don’t touch the carrier prematurely, providing a consistent reloading experience.

  • Two Step Finish.

    Starting with gas nitride submersion inside and out, followed by a DLC/TiN coating, our sand cutter bolt delivers rust-proof performance where other manufacturers fall short.

DeSCRIPTION.

The All-Rounder Carbine Grit Cutter Bolt Carrier Group (ARC BCG) is our individually proof tested and mag particle inspected bolt with an inner diameter bolt run that is machined tighter than competitor offerings. This gives the bolt a “Just Right” gas seal inside of the carrier which increases gas efficiency and service life. We use a two step finish to run our bolts through a submersion process to first gas nitride the bolt carrier before applying a DLC finish to provide rust proofing both inside and out. Nearly all M16 BCG manufacturers do not compensate for the lack of chrome plating in a TDP bolt carrier, but we make up the difference with our tight tolerance machining. Our Grit Cutter BCGs come with machined debris channels for enhanced reliability in all conditions.

Our bolt is shot-peened Crucible Carpenter 158®, and individually proof tested to guarantee service life. Our machined, chrome lined gas key is sealed against the carrier with Permatex gasket sealant and is affixed with our OCKS fasteners at 53 in/lbs w/thread locker. Our extractors are billet machined 4140 and manganese phosphate coated to retain grip against the casing rim, and utilize genuine Sprinco 5 coil extractor springs with rubber insert for added reliability and service life.

Specs:

  • Features carrier-belly scalloped relief cuts to assist with loaded magazine insertion.
  • Extended rails for added carrier stability during cycling.
  • Machined grit cuts limit granular resistance between upper receiver contact surfaces.
  • 8620 M16 Carrier, tighter ID for TiN case depth
  • Shot-peened C158 bolt, individually proof tested
  • Machined debris channels for enhanced reliability in adverse conditions
  • Gold Titanium Nitride coated
  • Machined extractor installed with insert and Sprinco 5 coil spring
  • Serrated OCKS fasteners
  • Laser engraved with LS insignia so you can cyberbully an impoverished Redditor

These bolts come standard in our All-Rounder Carbine, and also come finished in DLC, available here!

5/5

SKU: ARC-BCG-SC-TIN
5.00 out of 5
(1 review)

1 review for Lead & Steel ARC C158 Grit Cutter Bolt Carrier Group – TiN, 5.56mm/.300BLK, Individual HP/MPI BCG

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  1. 5 out of 5

    Anonymous (verified owner)

    This made the poors hate me.

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