The vk-1 rifle uses a patented low-profile piston system design featuring optimum gas port sizing and an advanced piston assembly.This features a unique cup and spigot design that improves the gas seal and overall efficiency of the gas system.The vk-1 includes a staged gas bleed system that allows the rifle to operate consistently, either suppressed or unsuppressed, with varying types of factory ammo.The vk-1 short stroke piston system includes a fully-supported one-piece op rod and removable gas block which matches the footprint and weight of a standard di ar-15 while providing the benefits of a piston driven system.*this rifle includes a gen3 compmag to meet california compliance, rifle lock, hard case and sons of liberty nox, pinned/welded to meet barrel length of 16".

Caliber: 5.56mm
Barrel Length: 13.70"
Capacity: 10+1
Trigger: Hiperfire Single Stage
Oal: 30.50"-33.10"
Weight: 6.60 lbs
Stock Description: Magpul SL
Muzzle: Sons of Liberty NOX, Pinned/Welded
Sights: None, Optic Ready
Barrel Description: Steel Threaded
Twist: 1:7"
Barrel Length Range: 13" to 13.99"
Weight Range: 6 lbs to 6.99 lbs
Hand: Ambidextrous
Stock Finish Group: Black