IBS Inner Barrel Stabilizer G&G ARP9 & 556 GIB1 Batteries: 2 x LR44 (not Kleur:Everglade Batteries: 2 x LR44 (not included) Weight: 320 g Shipping weight: 370 g Additional reticle illumination is provided via five EZ TAP crosshair brightness system Weight: 10 g Shipping weight: 20 g