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Rubber City Armory

High Quality BCG's & Bolts (Non-Stock Item). If purchased with a proper-chambered/matching AR barrel on the same order, the bolt will be head-spaced to that barrel and that barrel will receive our 1MOA or better guarantee.
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Blacknitride

Link to pending custom barrel order for headspacing?

(otherwise leave blank)

Cryogenics

$0.00

If purchased with a proper-chambered/matching AR barrel on the same order, the bolt will be head-spaced to that barrel and that barrel will receive our 1MOA or better guarantee.

 

BLACKNITRIDE℠ PROCESSING:

Much more than typical parkerizing, phosphating or black oxide,
BlackNitriding℠ is a thermal chemical diffusion of nitrogen and carbon
into the surface of the steel.

If purchased with a proper-chambered/matching AR barrel on the same order, the bolt will be head-spaced to that barrel and that barrel will receive our 1MOA or better guarantee.

 

BLACKNITRIDE℠ PROCESSING:

Much more than typical parkerizing, phosphating or black oxide,
BlackNitriding℠ is a thermal chemical diffusion of nitrogen and carbon
into the surface of the steel.

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