Iron City Rifle Works S1 Drop-In Bolt Carrier BCG EVO (NiB) 458 SOCOM

Iron City Rifle Works S1 Drop-In Bolt Carrier BCG EVO (NiB) 458 SOCOM


The S1 Drop-in BCG was created for use in real world applications without all the disadvantages of MILSPEC coatings. The EVO coating is the same gen 2 NiB coating used on Iron City’s competition series BCG. Their unique original design results in a flatter shooting system with a noticeable smoother & faster cycle rate & less felt recoil. The advanced coating also makes your cleaning time much easier and faster.

The NiB coating is twice as durable as traditional NiB and has a coefficient of friction of 0.02 with a surface hardness of 82-85 rockwell C. Unlike traditional NIB the EVO has the appearance of chrome and is even easier to clean.



Specifications:

- 458 SOCOM bolt

- Carrier machined from 8620 steel

- Advanced NiB coating-UCT EXO process, twice as good as standard NiB coatings

- Uniquely designed for minimal drag resulting in less felt recoil and flatter follow up shots

- Gas keys properly staked using grade 8 fasteners

- Side charging cut made for non reciprocating side charging upper receivers

- Made in the USA

- Lifetime warranty

- Standard weight BCG

- 556/223/300blkout/224vakyrie/6.5grendel/6.8spc

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