45 GAP Ammo

The .45 Glock Automatic Pistol (GAP) cartridge was designed to be shorter in length than a .45 ACP, while maintaining a similar level of energy. The .45 GAP is shorter than a standard 9mm cartridge, but will generate up to 600 foot pounds of energy at the muzzle.
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  1. Speer 45 GAP Ammo - 50 Rounds of 200 Grain JHP Ammunition

    Image For 50 Rounds Of 200 Grain JHP Boxer Nickel-Plated Brass 45 GAP Speer Ammunition

    Qty:

    $34.50 Price
    42
    In stock now
    • 50 Rounds
    • Made by Speer
    • American-made Self-Defense
    • 69¢ Cost Per Round
    • Speer SKU 53978
    • UPC 076683539786
  2. Federal 45 GAP Ammo - 20 Rounds of 185 Grain JHP Ammunition

    Image For 20 Rounds Of 185 Grain JHP Boxer Brass 45 GAP Federal Ammunition

    Qty:

    $17.75 Price
    31
    In stock now
    • 20 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 88.8¢ Cost Per Round
    • Federal SKU PD45G1H
    • UPC 029465096410
  3. Magtech 45 GAP Ammo - 20 Rounds of 230 Grain JHP Ammunition

    Image For 20 Rounds Of 230 Grain JHP Boxer Brass 45 GAP Magtech Ammunition

    Qty:

    $18.00 Price
    54
    In stock now
    • 20 Rounds
    • Made by Magtech
    • Foreign Self-Defense
    • 90¢ Cost Per Round
    • Magtech SKU GG45GB
    • UPC 754908194018
  4. Magtech 45 GAP Ammo - 20 Rounds of 185 Grain JHP Ammunition

    Image For 20 Rounds Of 185 Grain JHP Boxer Brass 45 GAP Magtech Ammunition

    Qty:

    $20.00 Price
    44
    In stock now
    • 20 Rounds
    • Made by Magtech
    • Foreign Self-Defense
    • $1.00 Cost Per Round
    • Magtech SKU GG45GA
    • UPC 754908193912
  5. Magtech First Defense 45 GAP Ammo - 20 Rounds of 165 Grain SCHP Ammunition

    Image For 20 Rounds Of 165 Grain SCHP Boxer Nickel-Plated Brass 45 GAP Magtech Ammunition

    Qty:

    $23.00 Price
    43
    In stock now
    • 20 Rounds
    • Made by Magtech
    • Foreign Self-Defense
    • $1.15 Cost Per Round
    • Magtech SKU FD45GA
    • UPC 754908193813
  6. Speer 45 GAP Ammo - 20 Rounds of 200 Grain JHP Ammunition

    Image For 20 Rounds Of 200 Grain JHP Boxer Nickel-Plated Brass 45 GAP Speer Ammunition

    Qty:

    $25.50 Price
    42
    In stock now
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.28 Cost Per Round
    • Speer SKU 23978
    • UPC 076683239785
  7. Federal 45 GAP Ammo - 20 Rounds of 230 Grain JHP Ammunition

    Image For 20 Rounds Of 230 Grain JHP Boxer Brass 45 GAP Federal Ammunition

    Qty:

    $25.70 Price
    2
    In stock now
    • 20 Rounds
    • Made by Federal
    • American-made Self-Defense
    • $1.29 Cost Per Round
    • Federal SKU P45GHS1
    • UPC 029465097813
  8. Speer 45 GAP Ammo - 20 Rounds of 185 Grain JHP Ammunition

    Image For 20 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 GAP Speer Ammunition

    Qty:

    $31.00 Price
    53
    In stock now
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.55 Cost Per Round
    • Speer SKU 23977
    • UPC 076683239778
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History of 45 GAP Ammunition

The .45 GAP (Glock Automatic Pistol) has been available since 2003, it is the first cartridge that has been introduced with the Glock name. The reason behind the development of this cartridge is that Glock wanted a .45 caliber bullet in a case that would not exceed the 9mm or .40 S&W. The point was that it would not be so long that it would have to have a grip larger than the Model 17 or 22.

The case of the .45 GAP is shorter than the .45 ACP, so much so that it is actually shorter than a 9x19mm! It uses small primers exclusively. All other case measurements are essentially the same. The bullets are the same as a .45 ACP, with most bullet weights ranging from 165 to 230 grains. The cartridges normally generate between 400-500 foot pounds of energy, with some loads touching 600 foot pounds of energy.

The reasoning behind the development of the .45 GAP was to develop the same or better energy as the .45 ACP while decreasing the front to back distance of the grip as well as the width of the grip. This made the .45 caliber handgun more accessible to shooters of smaller stature.

The .45 GAP was somewhat popular during its initial introduction. A few firearm manufacturers outside of Glock produced .45 GAP pistols. Currently, Glock is the only one that continues production. The best reception of the .45 GAP has been in the law enforcement community. The power of the .45 ACP in a more compact frame has made the Glock 37, chambered in .45 GAP the choice for five state law enforcement agencies. The New York State Police replaced their 9mm Glocks with the .45 GAP, while the state agencies for Georgia, Pennsylvania, South Carolina and Florida have all replaced their .40 S&W pistols with the Glock 37.

Discuss 45 GAP ammunition by adding your comment to the 3 comments below or by asking a new question

Barb Steiner ( Thu, 26 Jul 2012 22:03:58 +0000 ) : Can we actually use the same mags and shoot GAP ammo in the old Springfield A1 1911's?
Kimberly Boyes ( Fri, 27 Dec 2013 05:15:33 +0000 ) : No Ma'am, ACP and GAP ammo are not interchangeable.......
Brad Orange ( Fri, 27 Dec 2013 13:29:14 +0000 ) : Won't need this for too much longer
45 GAP Ammo Ammo Customer Reviews