Unleashed Performance Stage 2 Mod Kit for Nerf Recon This kit includes metal bolt sled with pin, aluminum breech with o-ring, aluminum plunger, and silicone grease. This kit by itself will only grant minimal performance gains over a stock Recon. This kit is designed primarily to reinforce your Recon's fragile stock internals for the additional power of the 5kg spring (included in the Stage 1 kit or sold separately). With BOTH this kit and our 5kg spring installed, the blaster shoots 90fps muzzle velocity with up to 65ft range (parallel to the ground) and up to 85ft range (30 degrees angled to ground) with stock streamline darts. Using weighted darts, we achieved ranges of 70ft parallel to the ground and 85ft 30 degrees angled to the ground. WARNING: Does NOT work for Modulus Recon MK II. Check out our Retaliator kits for that. Blaster not included. Mod at your own risk!