VFC KAC L403A1 KS-1 [EVO-AR] Gas Blowback Rifle (Newest VFC System)

Knight's Armament Corps L403A1 Gas Blowback Rifle - The Cutting Edge of British Small Arms Modernization

The L403A1 is the centerpiece of the UK Ministry of Defence’s Project Hunter, selected as the next-generation standard rifle for the British Army, Army Special Operations Brigade (ASOB), and Royal Marines Commandos. Based on Knight’s Armament’s KS-1 (an advanced iteration of the SR-16), the rifle features a 13.7-inch dimpled heavy barrel, URX-6 free-float handguard, and the proven Stoner internal piston gas system paired with the enhanced E3 bolt—offering improved reliability, modularity, and control under demanding field conditions.

The AIW system integrates a Vortex 1-10x LPVO, Aimpoint ACRO P-2 red dot, QDC/MCQ-PRT suppressor, reinforced cold-weather trigger guard, and fully ambidextrous steel controls including the selector, mag and bolt releases, and charging handle. Weighing approximately 3.1kg unloaded, the rifle is supported by UK-based prime contractor Edgar Brothers, who oversee component integration and delivery. It is now actively being fielded by the British Army, including special operations units and the Royal Marines’ reconnaissance and strike companies, replacing legacy L85A3 and L119 platforms.

The L403A1 marks a return to the AR-platform as a frontline standard, setting the stage for the UK’s infantry modernization. With plans to procure over 10,000 rifles in the next decade, the L403A1 is set to become the core weapon system for British forces engaged in high-intensity, joint-force operations.

KAC Full License Authorized Production

VFC KAC L403A1 GBBR is built under authorized by KAC, with fully authorized markings. Reproduce the L403A1 in modern British army, including details and markings are complete and exquisite.

Accurately Reproduced Details of the British Army's Standard-Issue Rifle

This model faithfully replicates the design of the British Army’s latest standard-issue rifle, the L403A1, featuring authentic components such as the KAC front and rear sights, URX 6 military-issue handguard, fluted standard barrel for heat dissipation in one-piece aluminum alloy, military-spec upper and lower receivers, authentic-style pistol grip, and a realistic bolt design. To complete the package, it also includes fully L403A1 markings, delivering an all-in-one replica true to the modern British service rifle.

Fully Ambidextrous Controls × All-Steel Reinforced Accessories

The newly released KAC L403A1 GBBR comes build-in with a fully ambidextrous control layout, including the magazine release, bolt catch, fire selector, and charging handle—all designed for seamless operation by both left- and right-handed users. In addition, key accessories throughout the rifle are constructed from steel, significantly enhancing durability, structural integrity, and overall handling quality—delivering an authentic, military-grade experience.

The All-New EVO AR GBB System Has Arrived

VFC’s AR series has officially evolved into the EVO AR GBB SYSTEM, building upon the proven reliability of the V3 platform with major upgrades focused on the upper receiver. Key improvements include a newly designed steel bolt carrier equipped with integrated gas relief ports—delivering enhanced gas flow stability and increased durability. The HOP-UP adjustment system has also been refined, with steel TDC Hop-Up unit and easy adjustment ensuring greater shot-to-shot consistency and accuracy during sustained fire. Together with the newly released V4-spec magazine, this upgrade marks a significant leap forward in performance and handling, offering a more refined and realistic GBB shooting experience.

Specifications: 

• Overall Length: 790/870 mm
• Overall Weight: 2800 g
• Inner Barrel Length: 330 mm
• Magazine Capacity: 30rds
• Gas Source: Green Gas / Propane
• Muzzle Velocity: Approx. 100m/s