Elite 2.0 Volt Mod. Pretty basic-brassed barrel, AR removal, tefloned plunger head, k26 spring, and custom catch spring. Not worth the effort. From my observations Elite 2.0 should be used as cheap
Nerf Elite 2.0 Volt Internals (plus some process) : r/Nerf
Amazon.com: Nerf Elite 2.0 Volt SD-1 Blaster, 6 Official Nerf Darts, 2 Tactical Rails to Customize for Battle, Christmas Stocking Stuffers for Kids Ages 8 and Up : Toys & Games
Nerf Rival NEMESIS Custom battery door with a hole for a - Etsy.de
Nerf Elite 2.0 Volt SD-1, Includes 6 Official Nerf Darts - Walmart.com