The Drop-Cylinder Strong-arm (Done "Right") - A New Twist on an Old favorite - YouTube
Mod Guide - Strongarm REV-6 - Modifications - NerfHaven
NERF Strongarm N-Strike Elite Toy Blaster with Rotating Barrel, Slam Fire, and 6 Official Elite Darts for Kids, Teens, and Adults (Amazon Exclusive) : Everything Else
Nerf Strongarm 9-dart cylinder mod (video with Thingiverse link) : r/Nerf
My first successful Mod - Strongarm / K26 / brassed : r/Nerf
Nerf Strongarm Mod: 9 Dart Cylinder by BellinghamXC - Thingiverse
Amazon.com: Nerf N Strike Elite Strongarm Toy Blaster With Rotating Barrel, Slam Fire, And 6 Official Nerf Elite Darts For Kids, Teens, And Adults(Amazon Exclusive) : Hasbro - Import: Toys & Games
Modulus Barrel Adapter for Nerf StrongArm (4NGYHGRNM) by Blasters3D
Digitalduino: Modding the NERF 6 Barrel Strongarm (Barrel Drop / Swap Mod)