The San Tan Tactical Enhanced Bolt Carrier Group is an AR-15 bolt carrier group made for 5.56 rifles. San Tan Tactical reengineered the carrier instead of simply putting an Enhanced label on a MIL-SPEC part, aiming it at shooters who push their rifles hard. The maker designed it for shooters who demand strong performance from the part at the heart of the firearm.

The group wears a black nitride finish with a matte black appearance, which gives you a low-gloss look inside the upper. San Tan Tactical lists precise manufacturing, long-term reliability and durable construction as the features of its parts line. The maker positions these parts for maintaining and upgrading firearms, so this group suits a refresh of your 5.56 AR-15.

• Brand: San Tan Tactical
• Model: Enhanced Bolt Carrier Group
• Type: Bolt Carrier Group
• Caliber: 5.56 NAT
• Finish: Black Nitride, Matte