Heavy Pistol: Springfield Finalist: Smartlink, Rangefinder, Silencer, Melee Reinforced, Caseless Ceramaplast Ammo, Invisible to MADs, RC (2), Skinlink. -2 concealability modifier, Damage at 6P, AP -1, semi-auto, 18 in the clip. I carry two; load one with AV rounds for Just In Case, load the other with clips of either Gamma-Scopalomine or Leal. Carry in concealable holsters for a total of -3. Add a long coat to make it -5. Strap on the daisho, get on the Honda Vector, and go for a ride...
No, it isn't in the books. It was built in SR3, and brought over, matching other similar stats. At ¥1,900 it's more than three times the cost of other heavy pistols, but that's what you have to pay. Helps to be able to surrender the obvious things (katana and wakizashi) at the weapons check, and walk in still fully armed...