GP P45 Mk12

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GP P45 Mk12 Gun Stats

GP P45 Mk12

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The popular K100 series of pistols with it’s unique rotating barrel mechanism has been enhanced by the addition of the P45 in the legendary .45ACP calibre. Built on the latest generation of Mk12 polyamide handle which has a new steel dismantling catch replacing the original trigger guard stop. This innovation makes for a stronger handle, enhanced reliability and easier field stripping. The pistol’s styling with it’s curved slide is in keeping with the classic .45 calibre and provides excellent handling and ergonimics.

GP P45 Mk12 Specs

1 Brand

2 Category

Technical Data


130 oz



Barrel Length



Black Polymer


Red Fiber Optic Front

Gun Type


GP P45 Mk12 Ballistics

How much is a GP P45 Mk12 worth?

In 2023 a new or used GP P45 Mk12 value varies depending on supply and demand. In the last 12 months there is great demand for a GP P45 Mk12 and most handguns. The Price for a GP P45 Mk12 has increased in cost by $0.00 in 2023 compared to 2022.

Estimated New and Used Values for a GP P45 Mk12 Values are based on a basic model with no options or colors.

Condition Trade-In Private Party Dealer
New In box $324.20 $423.95 $498.77
Excellent $299.26 $399.02 $448.89
Very Good $274.32 $399.02 $448.89
Good $249.39 $374.08 $423.95
Fair $174.57 $324.20 $399.02
Poor $124.69 $249.39 N/A

Gun Value Conditions explained:

New in box - 100% condition in unopened box. Excellent - 95%+ condition with or without box.

Very Good - 90% - 95% condition (all parts/finish should be original).

Good - 80-90% condition (all parts/finish should be original).

Fair - 30% - 80% condition, parts, and finish may or may not be original. Must function properly and shoot.

Poor - under 30% condition. Firearm has severe wear and tear, does not function, or is damaged.

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