The VKTR VK-1 Complete AR-15 Upper with a 13.7-inch barrel (brand part no. V-4027-3410-013-RP) is another configuration in VKTR’s piston-driven VK-1 upper lineup, built for shooters who want a compact carbine profile with less fouling in the action. VKTR machines the upper receiver from billet aluminum and runs a gas-piston operating system on every VK-1 build, a departure from the direct-impingement systems found on most factory AR-15s. At 13.7 inches, the barrel offers more sight radius and velocity than a short pistol-length upper while staying maneuverable. This is a complete upper assembly only, ready to attach to a compatible AR-15 lower.

Key Specifications

• Fitted with a 13.7-inch barrel for a compact carbine-style profile.
• Built on VKTR’s VK-1 complete-upper platform.
• Runs a gas-piston operating system instead of direct impingement.
• Upper receiver machined from billet aluminum for a rigid, precise fit.
• Sold as a complete upper assembly ready to mount on an AR-15 lower.
• Built for the widely-supported AR-15 platform.

Frequently Asked Questions

Does this upper include a lower receiver? No, it is a complete upper only; a compatible AR-15 lower is required to finish the build.

What gas system does it run? A gas-piston operating system, standard across VKTR’s VK-1 upper line.

What barrel length does this variant use? 13.7 inches, giving a compact carbine profile with extra sight radius over a pistol-length upper.

Buy the VKTR VK-1 Complete AR-15 Upper, 13.7-Inch

Add VKTR’s VKTR piston reliability to your next build from our rifle parts and accessories selection. Order it from our Lubbock, Texas gun shop and our team can help confirm fit with your lower.