Faxon Firearms URSSB762 ARAK-21 Complete Upper Receiver, Piston Operated, 7.62x39, AR-15, 16 Inches, Picatinny, Matte Black

Seamlessly integrates with standard AR-15 platforms using only the takedown and pivot pins for quick, tool-free installation in under a minute. Utilizes a gas piston system with an adjustable gas knob offering three gas flow settings for optimal operation and one for single-shot mode. Includes a robust barrel assembly unit comprising the barrel, gas block, muzzle brake, gas piston, gas adjuster, and barrel trunnion for enhanced reliability. Features a full upper receiver setup with a charging block, standard charging handle, lower forearm with screws, three aluminum full-length Picatinny rails, and insulating shims to support versatile accessory mounting. Comes equipped with a bolt carrier assembly, lower recoil lug, spring guide rod, and dual recoil spring system to minimize recoil and ensure smooth cycling. Designed with a matte black finish for durability and resistance to wear in demanding conditions, making it ideal for tactical and recreational shooting.

Features:

• Upper receiver is fully machined from an aircraft grade 6061-T6 aluminum billet in a one piece design.
• Top picatinny rail is laser engraved for optic placement.
• Long stroke variable setting gas piston system.
• Three options for gas flow, and one for no gas flow.
• Charging handle is ambidextrous, non-reciprocating, foldable, spring returned and is easily relocated from left to right side without tools.
• 3 o'clock extractor position allows for easy swap between right and left handed shooting.
• Self-contained firing pin retention system enclosed in a rectangular bolt carrier that no longer requires a cotter pin.
• Recoil system does not extend beyond the upper receiver to fully operate allowing for easy install of a folding stock.

Specifications:

• Fit: AR-15
• Accessories: Bolt Carrier Assembly & Charging Handle
• Type: Upper
• Manufacturer Part: URSSB762
• Color: Black
• Manufacturer: Faxon Firearms
• Model: ARAK-21
• Sub Category: Complete Upper Receivers
• Barrel Length: 16"
• Caliber: 7.62X39