Semi-Auto Shotgun HAMP

Blaster Design and Instructions by KaneTheMediocre

Forum Threads

http://nerfhaven.com/forums/index.php?showtopic=19622&st=0&p=276618&fromsearch=1&#entry276618

http://www.nerfrevolution.com/forums/viewtopic.php?f=9&t=1429

This gun uses the HAMP propulsion system, written up here:

http://nerfhaven.com/forums/index.php?showtopic=18962

Orange tip is the barrel, which is substantially below the HAMP. The blaster is by necessity fired from the hip, and fires 5 darts each time the HAMP plunger is cycled. The number of darts fired is determined by the number of darts that fit between the 45 and the T connector. Gravity feed easily puts darts in front of the air source, so it seems easier to feed than a wye hopper clip

To stabilize the plunger, a PVC saddle connects the plunger to a stick of PVC with a hole drilled into it. The mostly red support is wood and cardboard with mad duct tape, and it stabilizes the barrel. The barrel is PVC with a flared PETG insert, but can also be made with sch 80 pipe. Dart entries are made basically the same as with airgun-fed hopper clips, which are described here:

http://nerfhaven.com/forums/index.php?showtopic=19569

As with all HAMPs, range is partly determined by how hard you pull the plunger. Range is about 3/4 of what you would get out of a single firing hopper-HAMP. I find 100' to be a reasonable pull for a single dart, 75' for this shotgun. The spread is less than I would like, but still very helpful at medium range. That said, this blaster eats ammo faster than anything else I have, even the Compensator (but not the now divided PreCompensator)