[marvin02]

Depends what you're doing with your carbine. The Taccom barrel only has 5.25 inches of actual barrel, the rest is a fixed shroud to make it 16 inches.

Speed games would benefit but you end up with with pistol barrel velocities and possibly lose accuracy at longer ranges.

 

[marvin02]

not sure that makes a big difference though. Does the 9mm round actually gain that much more velocity from a 16in barrel over a 5.5in? I use my rifle for plinking only, so I still think it would make a cool option.

BBTI - Ballistics by the Inch :: 9mm Luger Results

(statement of intent)

ballisticsbytheinch.com

There's some velocity research, I'm not sure how much it would effect accuracy.