Nothing needed but a finger and a shoulder, rest the stock gently against your shoulder, don't grip the handle, and gently pull back with a limp index finger. The gun will fire 1 round and the recoil will continue to bounce the gun between your finger and shoulder.
01 XJ Sport - daily driver
in the garage waiting:
3" lift + 30x9.5 ATs coming soon
03 TJ X - toy
3.5" Rock Krawler Lift | Q78-15LT (35.5x10.8) on Cragar 365s
Teraflex BellyUp skid | JKS 1.25" BL | MORE 1" MML
Ford 8.8 LSD | Dana30 aussie locked
Engo E10000 winch | VIAIR OBA | Solid dif covers F&R
T&T crush corners with 6" flair | Warn steering box skid
PSC rocker guards | Warn RC front and rear bumpers | custom swing out tire carrier
too many other odds and ends to list.