Glock Parts - Glock Accessories

	GLOCK 21	GLOCK 21C
Caliber	.45 Auto	.45 Auto
Action	Safe Action System	Safe Action System
Length (slide)	7.59 in. 193 mm	7.59 in. 193 mm
Height ²⁾	5.47 in. 139 mm	5.47 in. 139 mm
Width	1.27 in. 32.5 mm	1.27 in. 32.5 mm
Length between sights ³⁾	6.77 in. 172 mm	7.00 in. 178 mm
Barrel length	4.60 in. 117 mm	4.60 in. 117 mm
Barrel rifling	right, octogonal	right, octagonal
Length of twist	15.75 in. 400 mm	15.75 in. 400 mm
Magazine capacity ⁴⁾	13	13
Mass (weight)
Empty without magazine	26.28 oz. 745 g	25.93 oz. 735 g
Empty magazine	3.1 oz. 88 g	3.1 oz. 88 g
Full magazine ⁵⁾	~12.0 oz. 340 g	~12.0 oz. 340 g
Trigger pull (standard)	~5.5 lbs. ~2.5 kg	~5.5 lbs. ~2.5 kg
Trigger travel for discharge ⁶⁾	0.5 in. 12.5 mm	0.5 in. 12.5 mm
Number of safeties	3	3

Notes
1) C= Compensated
2) Includes magazine and sight
3) With sight rear 6.5
5) Depending on the used ammunition
6) Includes

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	Standard	Compact	Subcompact	Practical Tactical	Competiton	Slimline

9x19	Glock 17	Glock 19	Glock 26	Glock 34	Glock 17L
40 S&W	Glock 22	Glock 23	Glock 27	Glock 35	Glock 24
357 Sig	Glock 31	Glock 32	Glock 33
10mm	Glock 20		Glock 29
.45	Glock 21		Glock 30			Glock 36
.45 G.A.P.	Glock 37	Glock 38	Glock 39