NOTES FROM LUKE:
Blasterparts Nerf Alphatrooper Upgrade Spring. This doesn't work with the new XD (orange) version of the Alpha Trooper!
Important: The Modification Kit fort he Nerf N-Strike Elite Alpha Trooper CS-12 does not fit the XD-variant, the so-called Nerf N-Strike Elite XD Alpha Trooper CS-6. We will offer the according Kit in the near future.