"it looks nothig like an IAR, it shoots far better than the M27 but it's practically the same thing... just more badass"
- Vera D. Tzukova

The Mk.51 Mod.1 SPAR (Special Purpose Automatic Rifle) it's the upgraded redesigned version of the M27 IAR this new updated design aims to satify specifications for special forces use support weapon (mostly anphibious special forces like the US Navy SEALs) and thanks to magpull inspired components, strenghtned reciver, FN type gas system with short run bolt (Z-M weapons patented) and heavy duty barrel

Cal.: 5.56x45mm
Mags: 30, 45 and 60 round mags also avabile 100 rounds B-mag
F. Modes: safe, semi and full-auto
ROF: 700 RPM
weight: 4.1 kg