Premiere Manufacturing Bolt Carrier with Rubber City Armory Adjustable Gas Key - (Carrier Only)
This Plated bolt carrier comes with either a Chrome or Gold(TiN) finish. This Bolt Carrier Group is perfect for any AR15, M4 or M16 Build. These carriers are built to military specifications, also known as "Mil-Spec" and they are known throughout the industry as some of the best!
Available in both Chrome and Gold
- Enhanced 9310 Steel (Bolt)
- 8620 Tool Steel (Carrier)
- Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
- Tool Steel Extractor
- Shrouded Firing Pin
- Mil-Spec Gas Key (4130 Steel) attached with Grade 8 hardware and Properly staked
- All bolt carrier components pre-polished before being processed and then post polished!
RCA Rubber City Armory Adjustable Gas Key
Adjustable gas keys are a great alternative to more expensive gas adjustment components. This gas key will achieve the same result at a fraction of the cost.
Made from Pre-Hardened 4140: 28-32RC with radiused corners reducing sharp edges
Enhances the performance of low mass and standard mass GI systems without unnecessary disassembly. Gas flow is adjusted and maintained at the carrier with set screws. One to adjust gas flow and one to lock it in place. 3 1/8 screws and 2 3/16 set screws and wrench included to make necessary adjustments; all included.