It's Chambered In 40 S&W With A 5” Button Rifled Barrel Supported By A Full Length Guide Rod. Smooth Angled, Snag-free Style Allows For Quick Draw In Fast Need Situations. Includes A Low Profile Adjustable Rear Sight, High Visibility Fiber Optic Front Sight, Skeletonized Hammer And Trigger With Adjustable Over Travel Stop And Ambidextrous Safety. Finished With A Tough, Parkerzied Matte Coating And Comes With G10 Tactical Grips. True To All Rock Island 1911s, It Comes With A Crisp Factory 4- To 6-pound Trigger, Making It A Great Experience Right Out Of The Box.

SPECIFICATIONS
SERIES  :  ROCK
CALIBER  :  40SW
CAPACITY :   8
BARREL  :  5"
OVERALL LENGTH  :  8 INCH 
OVERALL WIDTH  :  1.3 INCH
OVERALL HEIGHT :   5.51 INCH
WEIGHT : 1.13 KG
FRONT SIGHT  :  DOVETAIL FIBER OPTIC FRONT SIGHT;
REAR SIGHT :   LPA MPS1 TYPE ADJUSTABLE REAR SIGHT
GRIPS   : G10 BLACK/GREY
FINISH   : BLACK PARKERIZED
ACTION :   SEMI-AUTOMATIC
TRIGGER PULL :   4 - 6 LBS