9mm 威力不夠 ACP才爽!

GLOCK 21 Specifications

Caliber	.45 ACP
Action	Safe Action (constant double action mode)
Overall length (slide)	7.59 in. (193 mm)
Height, including magazine	5.47 in. (139 mm)
Width	1.27 in. (32.5 mm)
Barrel length	4.60 in. (117 mm)
Sight radius	6.77 in. (172 mm)
Rifling	Octagonal profile with right-hand twist of one turn in 15.75 in. (400 mm)
Weight, without magazine	26.28 oz. (745 g)
Weight, empty magazine	3.1 oz. (88 g)
Weight, full magazine	~12 oz. (~340 g)
Magazine capacity	13 rounds
Standard trigger pull	~5.5 lbs. (~2.5 kg)
Trigger pull length	0.5 in. (12.5 mm)
Number of safeties	3