Specifications include, but are not limited to: shotguns, rifles & pistols that enables governmental units to purchase M4 tactical rifles, shotguns and Glock pistols ; ACTION: GAS OPERATED SEMI-AUTOMATIC, NONPISTON CALIBER: 223,5.56MM NATO, CHAMBERED STOCK: 6- POINT COLLAPSIBLE STOCK, SIDE MOUNT FOR TACTICAL SLING TRIGGER: STANDARD MILITARY SPECIFICATIONS WITH TRIGGER PULL RANGING FROM 5.5 POUNDS TO 7.0 POUNDS BARREL: LENGTH - 16 INCH WITH CHROME LINING TWIST RATE 1 INCH TO 9 INCH MUZZLE: A2 FLASH SUPPRESSOR, BAYONET LUG, 2 PIECE ALUMINUM PICATINNY - TYPE RAIL SYSTEM SIGHTS: 2 FIXED FRONT ADJUSTABLE SIGHT, REAR ; UPPER RECEIVER :INCHFLAT TOPINCH DESIGN WITH RAIL SYSTEM , FORWARD ASSIST , ALUMINUM CRAFTED LOWER RECEIVER: SHALL INCLUDE STANDARD AMBIDEXTROUS SAFETY , SELECTOR SWITCH , TRIGGERGUARD , MAGAZINE CATCH BUTTON , PISTOL GRIP ; THREE MAGAZINES - POLYMER DESIGN FOUR - 30 ROUND CAPACITY ONE - BLACK SOFT HEAVY DUTY NYLON CARRY CASE WITH AT THE 3 EXTERIOR MAGAZINE POUCHES, HEAVY DUTY FULL LENGTH ZIPPER AND CARRY HANDLES, SIZE 41 INCHES LONG BY 12 INCHES WIDE BY 2.5 INCHES DEEP, CLOSED CELL FOAM PADDING ONE - FRONT SLING ATTACHMENT WITH SLING SWIVEL FOR PICATINNY TYPE RAIL SYSTEM ONE - VIKING TACTICS VTAC SLING WITH UNIVERSAL.