Evolve Weapons Systems 5.56 NATO AR-15 Bolt Carrier Group

The Evolve Weapons Systems AR-15 Bolt Carrier Group is made from quality materials with quality craftsmanship in McKinney, Texas. The black phosphate finish improves reliability by absorbing lubricant and allowing for easy cycling and the properly staked gas key won't come loose. This Bolt Carrier Group includes a Mil-Spec black extractor insert, a Viton O-Ring, and Mil-Spec extractor spring. Also included, is a Sprinco Extra Power 5 Coil extractor spring and Mil-Spec Black insert to upgrade the bolt carrier or repair it in case of damage. Evolve Weapons Systems makes high quality AR-15 Rifles that are designed for peak use while maintaining their reliability, so you can count on their bolt carrier groups to perform. 

Features:

• 5.56 NATO
• 8620 Steel Carrier
• Full Auto Rated
• Chrome Lined
• 4130 Heat Treated Chrome Lined Gas Key
• Machined Tool Steel Extractor and Ejector
• Grade 8 Fasteners (Made in the U.S.A)
• USGI Properly Staked and Torqued
• Phosphate Finished