The surface of the frame is the new Gen4 Rough Textured Frame-scientifically  designed, real world tested. A reversible magazine ctach, changeable in seconds,  accommodates left-or right-handed operators. Three magazines are standard on all  Gen 4 models.
Small, light, accurate and powerful: The GLOCK 27 is the backup  weapon for all situations. Because of its comfortable dimensions and the known  advantages of the GLOCK pistol family it is very popular by police on patrol  duty, which is why many law enforcement agencies issue this subcompact .40  pistol also as an official backup pistol.
Technical  Specs:
CALIBER
.40
WEIGHT
560 g /  19.75 oz.
LOADED (~)
765 g / 26.98 oz. 
LENGTH
160  mm / 6.29 in.
HEIGHT
106 mm / 4.17 in. 
WIDTH
30 mm /  1.18 in.
BARREL HEIGHT
32 mm / 1.26 in.
BARREL  LENGTH
88 mm / 3.46 in. 
BARREL RIFLING
right hand,  hexagonal
LENGTH OF TWIST
250 mm / 9.84 in. 
TRIGGER  PULL
2.5 kg / 5.5 lbs.
TRIGGER TRAVEL
12.5 mm / 0.5 in.  
LINE OF SIGHT
144 mm / 5.67 in.