The VKTR VK-1 Complete Upper (brand part number V-4027-3410-001-RP) is a 16-inch gas-piston-operated AR-15 upper, USA made, built around a billet aluminum upper receiver and a 15-inch quad rail hand guard. Unlike a standard direct-impingement AR-15, the VK-1 uses a gas piston system to keep combustion gases out of the receiver, running cleaner and cooler over long strings of fire. It ships with a Radian Raptor charging handle, an adjustable gas system, and an A2 flash hider on a steel barrel finished in nitride.

Key Specifications

• Chambered in .223 Rem/5.56 NATO, the standard AR-15 caliber with wide ammunition availability.
• Barrel length measures 16 inches, clearing the federal rifle minimum with no NFA paperwork required.
• Operating system is gas piston actuated, keeping combustion gases out of the receiver for a cleaner-running action.
• Rate of twist is 1:7, matched to a wide range of .223/5.56 bullet weights.
• Barrel material is steel with a nitride finish for durability and corrosion resistance.
• Upper receiver is billet aluminum, machined for durability.
• Hand guard is a 15-inch quad rail, giving broad accessory mounting options.
• Charging handle is the Radian Raptor design, and the gas system is adjustable for tuning the action.
• Muzzle device is an A2 flash hider, and the upper is made in the USA.

Frequently Asked Questions

Is this a complete rifle? No, this is an upper receiver assembly only with no lower receiver included. It ships without an FFL transfer and needs a compatible AR-15 lower to complete a rifle.

How is a gas piston system different from direct impingement? A gas piston system uses a piston rod to cycle the action instead of venting combustion gas directly into the bolt carrier, which keeps the receiver and internals cleaner and running cooler over extended use.

Does this 16-inch barrel have any NFA restrictions? No, at 16 inches this barrel meets the federal rifle minimum, so no ATF paperwork is required.

Buy the VKTR VK-1 Complete Upper, Gas Piston, 16in

Order this VKTR VK-1 gas-piston complete upper from a Lubbock, Texas gun shop for a cleaner-running AR-15 build. Browse more complete uppers in our AR15 uppers selection.