The SP5 was developed by Heckler & Koch as a semiautomatic civilian sporting pistol that matches the look and feel of the legendary MP5 submachine gun.The SP5 features a Navy barrel with threaded tri-lug adaptor; paddle magazine release; fluted chamber; roller-delayed blowback operating system. – Includes two magazines. – Series RAL8000 – Model SP5 – Caliber 9mmx19 – Capacity 30+1 – Action Semi-Auto – Frame Finish FDE – OAL 17.80 – Frame Material Steel – Sights Adj MP5 – Trigger Pull Weight 6.74-10.11 lbs – Grooves 6 – Height 8.66 – Includes 2 Magazines – Safety Ambidextrous Safety Lever – Thread Pattern 1 / 2×28 – Width 2.48 – Barrel Length 8.86 – Weight 4.20 lbs