Evolve Weapons Systems Bolt Carrier Group - Phosphate

Evolve Weapons Systems Bolt Carrier Group - PhosphateFull-auto rated. Range ready. Combat-proven.The Evolve Weapons Systems Bolt Carrier Group - Phosphate is a mil-spec, full-auto rated BCG built to meet the demands of hard use. Engineered from premium materials and finished with a durable phosphate coating, this BCG ensures smooth cycling and long-lasting reliability in any AR-15 platform chambered in 5.56 NATO.The C158 bolt is shot-peened and HPT/MPI tested for structural integrity, while the chrome-lined carrier and gas key promote optimal gas flow and wear resistance. The 4140 extractor includes an O-ring and is paired with the Sprinco extractor and ejector springs for enhanced extraction under high round counts. A properly staked gas key and 8620 steel full-auto carrier round out a BCG that's ready for duty, training, or defense.Features HPT/MPI tested the C158 bolt for maximum reliability 4140 phosphate-coated extractor with O-ring for consistent extraction Chrome-lined gas key & carrier interior, staked to spec Sprinco extractor and ejector springs for enhanced cycling 8620 steel full-auto profile carrier for added durability Mil-spec phosphate finish retains lubrication and resists corrosionSpecifications Caliber: 5.56 NATO / .223 Rem / .300 BLK Carrier Material: 8620 Steel (Full-Auto Profile) Bolt Material: C158, HPT & MPI tested Extractor Material: 4140 Steel w/ O-ring Finish: Mil-Spec Phosphate Gas Key: Chrome-Lined & Properly Staked Weight: 11 oz Platform: AR-15 / M16 Compatible Origin: Made in the USA