The Rolling Hill 20-inch AR-15 5.56 NATO Rifle Complete Upper Build from Davidson Defense is engineered for durability, accuracy, and reliability. This complete upper features a 20-inch 4150 CrMoV barrel with a 1:7 twist rate and a pinned front sight base, ensuring consistent performance. The rifle-length gas system and 0.750 gas block size optimize cycling for various shooting applications. Constructed with a 6061-T6 billet aluminum upper receiver, this upper also includes a mil-spec quality AR-15 M4 charging handle.
Its black anodized finish offers enhanced corrosion resistance. The rifle-length triangle handguard is designed in the M16/M16A1 style, providing a comfortable grip and easy handling. The complete bolt carrier group, made from 9310 alloy steel and finished in nitride, ensures longevity and reliability. This upper is a solid choice for gunsmiths seeking performance and precision in a robust AR-15 configuration.
Product Name: Rolling Hill 20-inch AR-15 5.56 NATO Rifle Complete Upper Build
Barrel Name: 20" 5.56 CMV Barrel w/ Pinned FSB, Rifle Length
Caliber: 5.56x45mm NATO
Barrel Length: 20-inch
Barrel Material: 4150 CrMoV
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Gas System Length: Rifle
Gas Block Size: 0.750
Color: Black
Upper Receiver Name: 6061 Billet Slick Side A1 Carry Handle Stripped Upper
Upper Receiver Material: 6061-T6 Billet Aluminum
Upper Receiver Finish: Anodized
Charge Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Handguard Name: Rifle Length Triangle Handguard, M16/M16A1 Style
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: Drop-In
Bolt Carrier Name: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
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