I would also go with the HK Mk23 made for socom.
In August 1991, Heckler & Koch, Inc. and Colt's Manufacturing Company were awarded contracts with the US Special Operations Command (USSOCOM) for the
development of an Offensive Handgun Weapon System (OHWS). USSOCOM directs the activities of some of America's most elite military units, including
the Navy SEALs, Air Force Special Operations Wing, and the Army Green Berets, Rangers, and Special Operations Aviation. The "OHWS" consists of three
components: a .45 caliber pistol, a laser aiming module (LAM), and a sound and flash suppressor.
From Mark23.com
Comes equipped with knights armament suppressor:
and laser light aiming module:
Specifications
Caliber : .45 ACP
Action type: linkless
Weight: 2.30 lbs, 1.1kg
Length: 9.6 inches, 24.4cm
Length (w/suppressor): 16.65 inches, 42.3cm
Width: 1.50 inches, 3.88cm
Rifling: polygonal bore, right hand twist
Trigger pull (S/A): ~4.50 lbs
Trigger pull (D/A): ~11 lbs
Barrel Threads: 16x1mm RH
Additional Information
Vo : 270 m/s (M1911 230 gr. ball), 348 m/s (+P 185 gr. JHP)
Eo : 545 Joule (M1911 230 gr. ball), 725 Joule (+P 185 gr. JHP)
Parts: 68
Effective Range: 50m
Maxiumum Range: 1341 m (M1911 ball)
Weight Loaded: 1460 g (3.21 lb)
Construction Year: 1991/92
Production Year: 1996
The tests which had to be successfully passed included the following:
30,000-round endurance firing test with +P ammunition
Tests at extreme temperatures +163,4�F/-58�F
96-h salt spray test mist test
Sand, dust, sludge test
96-h salt spray test
Harshest drop test
Maximum accuracy and precision
Special features :
Buffer system for minimised recoil forces
Either-handed safety lever and magazine release
Separate decocking lever on the left side
Extremely corrosion-resistant coating of all metal components
Polygon barrel hard-chrome plated internally.