Sako ARG

• Is Ranged — yes • Name — Sako ARG • Origin — Finland • Type — Assault rifle Battle rifle Designated marksman rifle Sniper rifle • Used By — See Users • Designer — SAKO • Design Date — 2020–2023 • Manufacturer — SAKO • Production Date — 2022– • Variants — ARG 40 GP ARG 40 DI ARG 50 GP M23 Ak 24 Ak 25 • Mass — ARG 40 DI: 3.2 kg M23: 3.9 kg Ak 24: 3.2 kg • Length — M23: 880 to 965 mm (retractable stock) Ak 24: 714 to 800 mm • Part Length — M23: 406.2 mm Ak 24: 292 to 368 mm Ak 25: 406.2 to 457.2 mm • Cartridge — 5.56×45mm NATO 7.62×51mm NATO • Action — Gas-operated, rotating bolt

Previously known as the K22, the ARG was designed along with the Finnish Defence Forces and the Swedish Armed Forces. In October 2025, the Finnish Defence Forces announced that they will carry out field testing of 5.56 mm Sako rifles (based on the same design as the ARG). The trials will be used to determine requirements for a 5.56 mm rifle to replace the RK 62 and RK 95 TP as the standard Finnish service rifle. As part of Project Grayburn, the ARG is being submitted as a potential replacement for the SA80 in the British military.

The ARG is based on the AR-10 and AR-15 design by Eugene Stoner but features a proprietary short-stroke gas piston system, similar to Heckler & Koch HK416 and other piston versions of AR-15-type assault rifles.

Assault rifle variant featuring short-stroke gas piston.

Variant featuring direct impingent operation.

Semi-auto 5.56 mm rifle made for the National Defence Training Association of Finland, equipped with a 16 inch barrel.

Semi-auto 5.56 mm rifle made for the Finnish civilian market.

Designated marksman rifle variant.

Finnish Defence Forces precision rifle variants.

Designated marksman rifle

Sniper rifle

Swedish Armed Forces variants.

5.56 mm, 11.5 inch barrel assault rifle

5.56 mm, 14.5 inch barrel assault rifle

7.62 mm battle rifle

• Finland • Sweden