Complete Bolt Carrier Assembly for the YHM-15, MODEL-57 or any other Mil- Spec AR-15 type firearm.
- Length: 7.152"
- Weight: 11.232 oz.
- Phosphate Coating
- 8620 Tool Steel Carrier
- Chrome-Lined Carrier
- Carpenter 158 Steel Bolt
- Staked Gas Key
- M16 Profile
- Made in USA