Assembling The Barrel

9mm Smg Rifle Grenade

The BSP nipple, socket, and lock nut assembly are screwed into the reducer. The assembly is then thoroughly tightened. The barrel tube is inserted into the BSP barrel assembly. The barrel tube is inserted into the BSP barrel assembly. The barrel is assembled from a 9 length of 15.88 x 3.25mm hydraulic tubing, a 1 BSP Reducer, 1 2 BSP Lock nut, 1 2 BSP Socket, and a 1 BSP Nipple threaded tube . Screwing the barrel assembly onto the upper receiver. Screwing the barrel assembly onto the upper...

Fitting The Mainspring

Bsp Smg Homebuilt

After placing the bolt into the upper receiver, the mainspring can be inserted, followed by screwing on the BSP cap. See final page, ''Construction Notes'' for tips on acquiring mainspring . Drill two 2mm diameter holes through the Magazine body and cap to retain the cap in position. A 34.93 x 15.88mm plastic tube cap is used to seal off the bottom of the magazine. As shown in Expedient Homemade Firearms -The 9mm Sub-Machine Gun, the magazine is made from a section of 34.93 x 15.88mm...

Lower Receiver Template

Hole diameters shown in millimetres The lower receiver is composed of two receiver side- plates, each being 9 '' in length. Each plate is identical. Each side - plate is cut from a length of 2.5mm thick steel sheet to the shape of the above template. The square recess shown in figure 'A' is the anchor point for the shoulder stock. This measures '' square. Note If the template is not 9 '' in length when printed, it may be enlarged using a photocopier until the necessary length is achieved.