For those who protect others

Sako ARG 40 Gas piston series is based on the short-stroke gas-piston system. It makes the rifle more robust in arctic, undersea and muddy environments. The bolt carrier group also remains cooler and cleaner during firing, enabling prolonged firing sequences in adverse conditions. The piston system is also more suppressor friendly, enabling less gas blowback to the operator.

True ambidextrous controls ensure seamless operation for both left-handed and right-handed users. This feature includes ambidextrous safety selectors, magazine releases, and bolt catch mechanisms, allowing for intuitive and efficient handling regardless of the user's dominant hand. The ergonomic design ensures that all critical functions can be accessed and operated with ease, enhancing the rifle's usability and effectiveness in high-stress situations.

Sako ARG 40 GP rifles are tested according to NATO D14 standards, ensuring consistent functionality in adverse arctic, sandy, and muddy environments. Its mechanical operation is specifically engineered to deliver uninterrupted performance under conditions where reliability is mission-critical. Our rigorous testing procedures push these rifles to their limits, guaranteeing dependable performance during operational use. At the same time, we closely collaborate with operators, continuously gathering valuable insights into the diverse scenarios the rifle may encounter and the conditions it must withstand in real-world situations.

The ARG 40 GP series feature a match grade two- stage trigger unit. This offers very predictable breakpoint for every shot which make rifle consistent and safe to use. The length from pressure to release, how each bit of travel feels—all of that is the same, every time. In the ARG S 40 GP series of rifles, the suffix S denotes a match-grade semiauto-only trigger unit.

Sako ARG 40 DI platform is currently available with multiple barrel length configurations from 11,5" – 16” for CQB use and versatile patrol duties. We provide various barrel lengths optimized for the end user's unique tactical objectives. This flexibility ensures our rifles precisely match unit demands. ARG 40 barrels are chrome lined for heavy duty performance.

The core of exceptional reliability lies in the use of premium materials and advanced surface treatments. Our rifles are crafted from carefully selected materials designed to withstand harsh environments and demanding operational use. The true measure of quality is durability—materials and treatments are chosen strategically to extend product lifecycle, enhance performance, and ensure consistent functionality even under extreme conditions.

Sako ARG 40 offers standardized mounting solutions like picatinny, MLOK and AR-compatible grip and rear stock. Operators can easily attach lasers, thermals, night vision, flashlights, and other tactical equipment, providing flexibility for various operational needs and scenarios. Grips and stocks are customizable based on client needs.

Latches, trigger units and magazines are compatible with other AR-15 rifles, which makes rifle system maintenance much easier, also on crisis situations. Not only are accessories limited to those directly related to the rifle, but a full line of supporting equipment is also supplied by SAKO through our extensive partner network. The assault rifle weapon systems are complemented by items that may include match grade ammunition, day optics, night vision, thermal imaging, laser target designation, spotting and ranging optics, tactical cases – just to mention a few.