The SP5K-PDW is semi-automatic civilian sporting version of the ultimate close quarters weapon The HK MP5K. The K designation is from the German word for short kurtz; thus the K model's shorter barrel and receiver. - But no matter the size all SP5 and MP5 models share the same HK roller-delayed blowback operating system which is legendary for its accuracy reliability and smooth shooting dynamic. Originally perfected on the Heckler & Koch G3 rifle this system has been used on many HK firearms still deployed around the world. - The SP5K-PDW was designed and manufactured to meet the definition of a civilian pistol. It is loaded with authentic features like a 4.5 barrel with Navy-style threaded tri-lug adaptor paddle magazine release and fluted chamber. - The SP5K-PDW is manufactured in Heckler & Koch's factory in Oberndorf Germany. It retains many of the critical elements of the MP5 and MP5K including its precision-machined components and attention to detail. This high level of quality and workmanship is a result of making civilian SP5 variants in the same factory on the same lines and by the same workforce that has been making MP5s for years. - SP5K-PDW 9mm with two 30rd magazines - Caliber: 9mm x 19 - Length: 13.8 in. - Height: 8.66 in. - Barrel Length: 5.83 in. - Sight Radius: 10.2 in. - Weight (without magazine): 4.2 lb - Magazine Weight Empty: 6 oz - Magazine Capacity: 30 - Trigger Pull: 6.74-10.11 pounds-force - Trigger Travel: .24 in. - Return Travel: .12 in. - Barrel Profile / Twist: 6 grooves right-hand twist