Unleashed Solid Stage 1 Kit for Nerf Retaliator Compatible with RECON MODULUS MK II! This kit includes metal trigger catch, 2x double strength trigger catch springs, reinforcement plate, and 5+ kg mainspring (2.5kg stock). When installed, the Retaliator shoots 100fps muzzle velocity with up to 75ft range (parallel to ground) and up to 85ft range (30 degrees angled to ground). Mod at your own risk! Increasing the spring tension can break or damage stock internal components of your blaster. Blaster not included.