This is the Drop in solution for the Nerf MEGA XL Big Rig and Boom Dozer to allow the firing of a multitude of ammo types:

.50 CAL (COMPATIBLE WITH ELITE/ HALF DART5.50 CAL FOAM BALL ETC) ULTRA HYPER RIVAL 17/32 BRASS 3 CHAMBER BUCKSHOT And now by popular request even Boomco Straws!

Special thanks to Blitz_Mekanika for this version of the shell!

Printing:

Speed 50mm Infill 15-20% concentric Support touching build plate concentric Hide seam