Gamo PT-90


H&K USP (.45 ACP)

Gamo, PT-90
Replica Of:
H&K USP (.45 ACP)
Made In:
177, lead pellet, 8-shot rotary magazine
Air Source:
CO2, 12 g Powerlet
Recommended Pellet or BB:
Crosman Premier Super Match
Weight (lb)/Length (in):
1.3, 7.75
Body Material/Finish/Grips:
metal/plastic, black, plastic
Barrel Length (in)/Material/Rifled:
4.25, steel, yes
Trigger Action:
Trigger Pull (lbs)/Adjustable:
10.4 (DA), 9.6 (SA), no
Sights (front/rear):
fixed, adjustable (windage)
Velocity (fps):
Sound Level (dB):
Thickness of Pellet Holder (in): 0.355
Manufactured Dates:
2002 - 2006, 2007 - 2008 (see comments)
95, yes, yes
Serial Number:
Comments: The Gamo PT-90 is a very accurate replica of the H&K USP. It fits the hand well, but has a very heavy DA and SA action (even the SA action is nearly 10 lb). This makes it difficult to shoot groups as tight as the PT-80 will produce even though the two guns use the same valving and barrel. Gamo discontinued importation of the PT-90 in 2006 after only four years of production. Gamo added the PT-90 back into their imported product mix in late 2007 and then dropped it again in late 2008 or early 2009. The PT-90 remains available in Europe but is no longer imported to the USA.

Exploded Parts Diagram for PT-90 (.pdf)

Performance: Measurements were made on 8/01/06 at a temperature of 84 F and 14' elevation. A ten shot string was fired from a bench rest at 15' using Crosman Premier Super Match pellets (7.9 gr). The highest velocity measured was 369 fps, the lowest was 336 fps (average of the 10-shot string was 348 fps). A five shot string fired with open sights grouped at 1.07". Click the thumbnail below to see a larger image. Click here for a description of the measurement methods.


Right Profile:

Front View: The barrel housing is made of metal. The rest of the gun is made of plastic.

Right Side Markings:

Left Side Markings:

Loading Pellets: Pressing down on the slide release lever causes the front part of the "slide" to swing up, exposing the loading mechanism. The PT-90 uses the same 8-shot magazines as the PT-80.

Loading CO2: Gamo did a good job of designing the cylinder piercing system so that the cylinder tightening screw does not show. This give the gun a clean profile and more realistic appearance.




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