Upgrade your AR-15 with the Guntec AR-15 Nitride Bolt Carrier Group Mil-Spec BCG for reliable performance in demanding conditions. This precision-engineered component delivers consistent cycling and enhanced durability, making it an ideal choice for builders and shooters seeking a dependable upgrade or replacement.
Key Features
- 8620 steel bolt carrier with M16 profile for full compatibility with Mil-Spec AR-15 platforms
- 9310 steel bolt that is magnetic particle inspected (MPI) for superior strength and defect-free construction
- Salt bath nitride finish on both carrier and bolt for exceptional corrosion resistance and reduced friction
- Hydraulically staked carrier key with Grade 8 screws to Mil-Spec standards
- Compatible with .223 Remington, 5.56 NATO, and .300 BLK cartridges
Why Choose This Product
The nitride coating provides a hard, lubricious surface that resists wear, sheds carbon buildup easily, and maintains smooth operation even after extended use. This helps reduce maintenance time while ensuring reliable function in tactical, competition, or recreational shooting scenarios. Its Mil-Spec design guarantees drop-in compatibility with standard AR-15 upper receivers without modifications.
Specifications
- Bolt Material: 9310 Steel
- Finish: Salt Bath Nitride
- Carrier Profile: M16
- Platform: AR-15
- Cartridge Compatibility: .223/5.56 NATO/.300 BLK
- Magnetic Particle Inspected: Yes
- High Pressure Tested: Untested
- Weight: 11.5 oz
- Dimensions: 6.5″ L x 1″ W x 1.2″ H
- Origin: Made in USA
Invest in proven reliability and elevate your build with this Guntec Mil-Spec BCG today.








