The Spike's Tactical M16 Lightweight Bolt Carrier Group is a nickel boron coated BCG for AR-15 rifle and carbine builds. It uses the M16 carrier profile and a lightweight carrier, and it comes from Spike's rather than an unbranded copy.
The nickel boron coating covers the bolt, the carrier and the gas key, inside and out. Nickel boron is a slick, hard surface, so carbon fouling wipes off more easily than it does from a bare phosphate carrier, and the coating resists wear where the carrier rides in the upper receiver. Each carrier is laser engraved with the ST Spider logo.
Features:
Fit check: this BCG is made for AR-15 uppers. Confirm your barrel's caliber and bolt face match the bolt before you order. A lightweight carrier changes how the rifle cycles, so your gas system and buffer may need tuning, especially on short or suppressed builds.
Lube the carrier before the first range trip, and have headspace checked by a qualified gunsmith whenever you pair a new bolt with a barrel. Function-check the rifle before you fire it.
