The LWRCI Advance Combat Bolt ACB is a replacement bolt for LWRC rifles chambered in 6.8mm SPC, designed to deliver improved durability and extraction performance. It uses a fully supported bolt face and a reinforced extractor-pocket design, then pairs that strength with shot-peening and a nickel-boron coating to help reduce friction under hard use.
Key Features
Shot-peened for enhanced durability under repeated cycling loads and nickel-boron coating for smooth operation
Fully supported bolt face for added strength at the cartridge head
Fits Mil-STD AR bolt carriers for proper function in compatible rifles
Reinforced bolt geometry without the traditional undercuts near the extractor pocket
Dual-spring extractor design for increased extraction force and longer service life
Designed for LWRC 6.8mm SPC rifles including Six8 and legacy M6 6.8 SPC platforms
Upgrade reliability and bolt durability with an LWRCI-spec ACB replacement bolt built for sustained 6.8mm SPC use.
