Cherub "curvy" Nerf blaster

READ THE WHOLE DESCRIPTION.
USE THE LATEST VERSION STEP OR F3D, NOT THE STLs.
Versions indicated are STEP file versions.
Files named "cherub shell" actually contain the entire blaster. Sorry for the confusion.
Okay. now that that's over with, I'll start by saying real blasters have curves. I put over 6 hours of design time into this, but no more than 7 (as of v2). Be impressed if you want, I don't find it particularly fast. 6 whole hours? That's a long time.

Update to v3: Mag now sits lower in the blaster by 0.1". Mag now slips into place without having to hold down the release lever. All solids named appropriately rather than numerically. Springs are far less likely to slip out of place. (I still recommend adding a small nub with an OD equal to the ID of your spring wherever a spring goes, or using hotglue to hold the springs in place.)

I now also have included a multibody STEP file of the left half of the shell (the two halves are symmetrical) cut up into 120mm by 120mm bl