While it originates from a pistol, it still technically is a carbine with the kit, sooooo...
My CQB pig for LT's Winter Indoor series, because I didn't feel like buying another gun or downgrading my primary. Had to add my personal flare. Carbon fouling job on the muzzle and in the breech/ejection port. It is a WE G17 inside with a PDI tight bore barrel and PDI W-Hold bucking.
With the kit, I have two words: laser gun.