The STM is a series of AR-15 rifles by Russian Soyuz-TM company based in Saint-Petersburg. Rifles are available in a huge number of calibers, with different barrel lengths and colors and equipped with stocks and pistol grips from DLG Tactical or Fab Defense.

Features• Short Stroke system• quick barrel change like on the STEYR AUG• ambidextrous• dry lubrification• monolythic upper receiver

Mar 11, 2017 · The Steyr Mannlicher STM 556 fires the 5,56x45mm NATO cartridge and feeds through standard AR-15/M16/M4-type magazines. Steyr Mannlicher issues clear polymer magazines that are STANAG 4179 compliant (e.g. compatible with all AR-15 type rifles) and patterned after the Steyr AUG's "waffle" magazines.

The STG-556 is a Steyr AUG clone formerly manufactured by Microtech Small Arms Research (MSAR). [5] . It was available in civilian and military/law enforcement (select-fire) variants. [6] It was introduced at the 2007 SHOT Show. The first few …

Aug 22, 2017 · The STM-556/RS-556 features an adjustable short-stroke gas piston system and a rotating bolt based on that of the AUG. In full-auto, it has a rate of fire between 600 and 800 rounds per minute.

The STM-556 / RS-556 Rifle represents an attempt to merge the now ubiquitous U.S. M4 Carbine ‘s ergonomics and layout with certain other advanced features, borrowed from their own famous Steyr AUG-77 Assault Rifle.

The STM-556 assault rifle was first introduced in 2012 by renowned Austrian gunsmith Steyr-Mannlicher. It was announced in 2016 that the rifle would enter the Bundeswehr competition to replace the then-in-service HK G36 rifle.

Jun 25, 2019 · Steyr Mannlicher joined forces with Rheinmetall and developed the STM-556 as their submission for this competition. Read more over at Tactical-Life.com. Has Steyr combined the AUG and the AR to create the ultimate combat rifle?

Oct 30, 2012 · Called the STM 556, this rifle features a monolithic upper and quad-railed handguard that implements a quick-change barrel system. The rifle uses a short-stroke gas piston-operating system, and...

Oct 18, 2022 · The civilian version of the STEYR ARMS STM 556 is now available for order, designed for tenders requiring the AR15 system. It features a short stroke piston system, quick barrel change, ambidextrous controls, dry lubrication, and a one-piece upper receiver, making it a unique AR15 with AUG features.