KAK Industry K-SPEC Enhanced Bolt Carrier Features The KAK Industry K-SPEC Enhanced bolt carrier group retains mil spec dimensions while adding slotted angled carrier rails nicknamed sand cutters that help clear debris and keep the action running smoothly in harsh conditions. A dual ejector system improves case extraction reliability over single ejector designs reducing the odds of a stuck case interrupting a string of fire. This particular model features KAK Industry s proprietary Down Vent configuration for the 6.5 Grendel Type II bolt face which redirects gas downward instead of venting it back toward the shooter s face. The result is a noticeably quieter less gassy shooting experience whether the rifle is run suppressed or unsuppressed with no additional tuning required. Machined from 8620 steel to the full auto M16 carrier profile the carrier is properly heat treated and ground to exacting tolerances for long term durability. Supporting components include a single piece billet machined 4140 extractor and a 4340 phosphate coated cam pin both chosen to increase corrosion resistance and reliability. An 8740 chrome plated firing pin is precision ground and heat treated while a phosphate coated chrome lined gas key is staked and sealed to the carrier for a secure long lasting connection. Finished in black phosphate the KAK Industry K-SPEC Enhanced Bolt Carrier is available for sale at GrabAGun for AR-15 and M16 platform owners seeking a genuine reliability upgrade in 6.5 Grendel. KAK Industry K-SPEC Enhanced Bolt Carrier Specifications Manufacturer: KAK Industry Model: K-SPEC Enhanced Compatible Hosts: AR-15 M16 Type: Bolt Carrier Caliber: 6.5 Grendel Carrier Type: M16 Material: 8620 Steel Finish: Manganese Phosphate Color: Black Length: 7.125 Height: 1.25 Width: 1 Weight: 0.73 lbs Available At: GrabAGun