LanTac M-SPEC BCG 5.56 TIN – AR-15 Bolt Carrier Group

The LanTac M-SPEC BCG delivers mil-spec reliability with enhanced durability through a Titanium Nitride (TIN) coating. This bolt carrier group meets or exceeds military specifications for 5.56 NATO/.223 Remington AR-15 platforms, offering improved lubricity and corrosion resistance compared to standard phosphate finishes. The TIN coating reduces friction and carbon buildup, making post-range cleaning faster and easier while extending component life under high round counts.

Machined from 8620 steel with a carpenter 158 steel bolt, this BCG features proper staking, a chrome-lined interior, and gas key secured to mil-spec torque values. The distinctive gold TIN finish isn't just cosmetic—it provides a hard, slick surface that helps maintain function in adverse conditions. Installation is drop-in for any mil-spec AR-15 upper receiver; no fitting or gunsmithing required. Includes bolt carrier, bolt assembly, cam pin, and firing pin.

• Part Type: Bolt Carrier Group
• Compatible Firearms: AR-15, 5.56 NATO/.223 Remington
• Material: 8620 steel carrier, Carpenter 158 steel bolt
• Finish: Titanium Nitride (TIN)
• Installation: Drop-In
• Includes: Bolt carrier, bolt assembly, cam pin, firing pin