Nerf N-Strike Elite Strongarm Main Spring Replacement - iFixit Repair Guide
nerf strongarm | Strongarm Nerf N-Strike Elite Toy Blaster with Rotating Barrel, Slam Fire, and 6 Official Nerf Elite Darts for Kids, Teens, and Adults - Amazon Exclusive
2 thrift trips, wanted a sweet revenge; so went looking for a hammershot but came out with an orange mod works final stage kit on a strongarm AND the SR. $10 for
Nerf N-Strike Elite Strongarm Main Spring Replacement - iFixit Repair Guide
NERF GUN STRONGARM BLASTER +AMMO 10 NEW BULLETS DARTS - RARE CLEAR RED EDITION | eBay
CWC - Strongarm Internals
Nerf Strongarm 9-dart cylinder mod (video with Thingiverse link) : r/Nerf