The Rolling Hill 20-inch AR-15 5.56 NATO rifle upper build kit from Davidson Defense is engineered for durability and precision. This kit includes an Aero Precision 20" 5.56 CMV barrel with a pinned front sight base, providing a reliable platform for performance. Constructed from 4150 CrMoV steel, the barrel features a 1:7 twist rate and a 1/2x28 thread pitch, supporting a variety of muzzle devices. The upper receiver is a stripped 6061-T6 billet aluminum A1 carry handle styled unit, finished with a robust anodized layer for protection.
Accompanying components include a black 6061-T6 aluminum drop-in handguard and an AR-15 GI birdcage flash hider. The direct impingement gas system utilizes a stainless steel gas tube for reliability. This build kit is fully compatible with standard AR-15 lower receivers, making it ideal for gunsmiths who appreciate quality craftsmanship in firearm assembly.
Product Type: AR-15 Rifle Upper Build Kit
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
Barrel Color: Black
Gas Block Size: 0.750
Barrel Gas System Length: Rifle
Upper Receiver Name: 6061 Billet Slick Side A1 Carry Handle Stripped Upper
Upper Receiver Material: 6061-T6 Billet Aluminum
Upper Receiver Finish: Anodized
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: Drop-In, Retro, Two Piece
Length: Rifle
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Device Finish: Manganese Phosphate
Muzzle Device Thread Pitch: 1/2x28
Gas Tube Name: Rifle-Length Stainless Steel Gas Tube
Gas Tube Material: Stainless Steel
Gas System: Direct Impingement
Sights: A2 Front Sight Kit
Sights Material: Steel
Miscellaneous Parts: 1/2" Crush Washer - Black
To view the most up-to-date shipping times Click HERE. To view Warranty, Returns, Terms & Restrictions Click HERE.
