Fostech Complete Bolt Carrier Group Black
Full-auto M16 cut bolt carrier group with heavy profile design. 9310 alloy steel bolt, 8620 steel carrier, black nitride finish. Compatible with .223, 5.56, and 300 Blackout. USA made.
Fits: AR-15, Fostech Echo AR-II, Fostech Echo Sport
Fostech Complete Bolt Carrier Group
This is a purpose-built bolt carrier group designed for shooters who demand reliability and precision. The full-auto M16 cut design provides compatibility with a wide range of AR-platform rifles, including the Fostech Echo AR-II and Echo Sport systems.
Bolt Assembly
Superior Materials and Finishing
- Bolt machined from 9310 alloy steel for exceptional durability
- Shot peened and magnetic particle inspected for quality assurance
- Hardened tool steel extractor with Viton mil-spec O-ring
- Three mil-spec gas rings for reliable cycling
- Black nitride finish resists corrosion and wear
Bolt Carrier
Heavy Profile Design
- 8620 steel construction preferred for most AR-15 builds
- Heavy profile M16 style carrier for enhanced reliability
- Grade 8 gas key screws properly torqued and staked to mil-spec standards
- 4130 steel gas key with black nitride finish
Additional Components
- Cam Pin: 4140 steel with black nitride finish
- Firing Pin: 8740 steel, centerless ground and hard chrome plated for longevity
- Weight: 11.6 ounces
- Caliber Compatibility: .223 Remington, 5.56 NATO, and 300 Blackout
Made in America
100% USA manufactured to exacting standards. This bolt carrier group represents the quality and attention to detail that serious shooters expect.
