Details
Bear Creek Arsenal 20 Inch Rifle Gas 1:8 5.56 NATO Drop In Polymer Handguard Complete Upper
This Bear Creek Arsenal complete AR-15 upper delivers rifle length gas system performance through a 20 inch barrel in 4150 Chrome Moly Vanadium with black nitride finish and 1:8 twist rate. The upper assembly includes E9310 bolt carrier group, charging handle, and drop in polymer handguard for lightweight accessory mounting. Built as a fully assembled solution for AR-15 lower receivers chambered in 5.56 NATO, this upper provides rifle gas system function and 20 inch barrel performance for target shooting and tactical applications requiring extended range capability.
Key Features
- 20 inch barrel in 4150 Chrome Moly Vanadium with black nitride finish and 1:8 twist rate
- Rifle length gas system for reliable cycling with standard ammunition
- E9310 bolt carrier group and charging handle included
- Drop in polymer handguard provides lightweight platform for ergonomic grip and accessory mounting
- Complete upper assembly ready to mount on AR-15 lower receiver
- 1:8 twist rate stabilizes various bullet weights from 55 grain through 77 grain
Perfect For
- AR-15 builders seeking rifle length gas system performance with 20 inch barrel for extended range
- Target shooters prioritizing accuracy potential through longer barrel length and smooth rifle gas system
- Budget conscious builders wanting complete upper assembly with all necessary components included
- Tactical users requiring 1:8 twist rate for stabilization of common 5.56 NATO bullet weights
20 Inch Barrel with Rifle Gas System
The 20 inch barrel is manufactured from 4150 Chrome Moly Vanadium steel with black nitride finish for corrosion resistance and surface hardness. The 1:8 twist rate stabilizes common 5.56 NATO bullet weights from 55 grain through 77 grain, supporting accuracy across a wide range of ammunition types. Rifle length gas system provides smooth cycling characteristics with reduced felt recoil compared to shorter gas systems, making this configuration well suited for precision shooting and extended range applications. Black nitride finish penetrates the steel surface for long term protection that resists wear during extended firing schedules.
E9310 Bolt Carrier Group
The included bolt carrier group is manufactured from E9310 steel, a common material for AR-15 bolt carriers that provides adequate strength for 5.56 NATO pressures. The complete bolt carrier group includes bolt, carrier, gas key, cam pin, and firing pin, eliminating the need to source these components separately. This ready to install configuration saves assembly time and ensures proper component compatibility.
Drop In Polymer Handguard
The drop in polymer handguard provides a lightweight platform that reduces overall upper weight while maintaining structural support for accessories. Polymer construction resists heat buildup during extended firing compared to metal handguards while providing ergonomic grip surface for comfortable handling during extended use. The drop in design simplifies installation and removal without requiring specialized tools or barrel nut modifications. Standard handguard cap interface ensures compatibility with common accessories and front sights.
Follow safe handling and manufacturer instructions. Ensure compatibility with your specific AR-15 lower receiver before installation. Verify headspace and function after installation. Ensure compliance with all applicable laws.
