M20 Electronic Earplug Kleur:Zwart Synthetic or semi synthetic parts are Maat:60 Synthetic or semi synthetic parts are injection molded from high quality polymers Features All steel constructionCase hardened and finished with a ferritic nitrocarburizing process for extreme resistance to wear and corrosionMounts on any MIL STD 1913 Picatinny STANAG 4694 rail including receiver height gas blocksElevation adjustment knob – no tools requiredPositive detents in both the up and down positions as well as on the elevation knobStandard AR sight height when deployed Specifications MBUS Pro – FrontWeight This solution protects hearing from gunshots and other sounds without limiting standard communication Weight: 100 g Shipping weight: 130 g