Forty five Hole ammunition was Specially created for Glock and "GAP" essentially stands for "Glock Automatic Pistol". Engineer Ernest Durham created the forty five Hole round being a cartridge that would be as powerful as 45 ACP but might have a much better situation head to decrease the chance that https://tacticalrounds.com/product-category/handgun-ammo-for-sale/45-gap-ammo/