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Quick Look

The .45 GAP (Glock Automatic Pistol) cartridge was introduced in 2003 by Glock and Federal Cartridge. It offers similar performance to the .45 ACP but in a smaller frame design. While less common than the .45 ACP, the .45 GAP serves niche shooters wanting .45 caliber power in compact pistols.

Why It's a Top Choice

Compact dimensions for smaller pistols
.45 caliber stopping power
Reliable feeding and extraction
Compatible with specially designed Glock pistols

Key Variants

No major distinct variants exist for the .45 GAP cartridge itself. It is produced mainly in standard pressure loads suitable for self-defense and duty use.

Competitor Comparison Table

Feature	.45 Gap	.45 ACP	9mm Luger
MSRP	$1.00–$1.50/round	$0.30–$1.00/round	$0.20–$0.50/round
Capacity/Size	Shorter case than .45 ACP	Standard full-size pistol cartridges	Smaller, higher capacity
Weight	Heavier recoil than 9mm	Heavy recoil	Lighter recoil
Optics-Ready	Dependent on pistol model	Dependent on pistol model	Common on modern pistols
Trigger Type	Striker-fired pistols	Varies by manufacturer	Varies by manufacturer
Notable Pro	Compact .45 caliber option	Proven stopping power	High capacity and low recoil
Notable Con	Limited pistol selection	Larger pistol frames needed	Less stopping power than .45

Best Use Cases

Self-defense in compact pistols
Law enforcement duty carry
Range practice with .45 power
Collectors interested in unique cartridges

FAQs

Can I use .45 GAP ammo in a .45 ACP pistol?

No. The .45 GAP cartridge has different dimensions and requires pistols specifically chambered for it.

What pistols are chambered in .45 GAP?

Glock models such as the Glock 37, 38, and 39 are designed to shoot the .45 GAP cartridge.

How does .45 GAP performance compare to .45 ACP?

The .45 GAP provides similar ballistic performance but in a shorter case, suitable for compact pistols.

45 GAP for Sale