The VKTR VK-1 Complete AR15 Upper in 5.56 (brand part no. V-4027-3410-014-RP) is a fully assembled 13.7-inch upper finished in Sniper Gray cerakote and built around a low-profile piston operating system. VKTR pairs the 13.7-inch barrel with a 12.5-inch M-LOK handguard and a bolt carrier group machined with a patented cam path for reliable cycling, and tops it off with a 12 o’clock Picatinny rail for optic mounting. The included HUX WRX quick-detach flash hider satisfies legal barrel length requirements for a 16-inch overall configuration while keeping the profile sleek, making this a ready-to-run upper for shooters who want piston reliability without assembling the parts themselves.

Key Specifications

• Chambered in 5.56, the standard AR15 platform caliber.
• Features a 13.7 inch barrel paired with a HUX WRX quick-detach flash hider to meet legal length requirements.
• Includes a 12.5 inch M-LOK handguard for a balanced, accessory-ready forend.
• Runs a low-profile piston operating system rather than direct impingement for cleaner, cooler cycling.
• Bolt carrier group machined with a patented cam path for reliable, consistent cycling.
• Finished in Sniper Gray cerakote for a durable, non-reflective exterior.
• Topped with a 12 o’clock Picatinny rail for mounting a red dot or magnified optic.

Frequently Asked Questions

Does this upper come fully assembled? Yes, it is a complete upper including barrel, handguard, bolt carrier group, and flash hider, ready to mount on a compatible AR15 lower.

Is this a direct impingement or piston system? It runs a low-profile piston operating system rather than direct impingement.

What caliber is this upper chambered in? It is chambered in 5.56.

Buy the VKTR VK-1 Complete AR15 Upper

Shooters who want piston reliability and a finished, cerakoted upper without sourcing and assembling parts individually will get a genuinely ready-to-run build with the VK-1. Order it through our Lubbock, Texas gun shop and browse more AR15 uppers from VKTR and other trusted brands.