Ben is carrying MA15, Vortex 4-16x and an offset Razor red dot. LH9mk2 stays close to his side with a G-Code paddle holster.
Same rifle with Vortex 1-4x and a +18 magazine extension. Slap backup sights on it and it would be ready for three-gun.
For serious use, I would prefer the more compact X15 drum holding 50 rounds. It’s small, all-metal and protrudes no lower than a 20-round box magazine.
LH9mk2 in a GCode holster. I like GCode, especially since their holsters easily convert from belt to paddle to IWB to Molle.