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Bullpup pump action rifle (working) . a working pump action rifle in bullpup configuration . this is a pump action rifle in bullpup configuration. for those of you who dont know what bullpup is, it is when you have the magazine, reciever and chamber behind the handle. bullpup rifles were introduced because (obviously) the design makes the barrel longer in proportion to the overall length of the gun. this makes the gun more accurate, and has the potential to make the gun more powerful with the same calibre bullet (the gas from the explosion is focused on pushing the bullet forward for longer if you have a longer barrel). the most famous and successful bullpup rifle is the Steyr AUG. other bullpup rifles include the Tavor, FN P2000, FAMAS, and other guns. (the P90 is one, but it is a sub-machine gun, not a rifle) if all this text is too much for you, you can see a video here which explains it much better. this gun was originally going to be a FAMAS, but halfway through building it i decided that a pump action would work better that the cocking handle that the FAMAS has. also, building a full scale FAMAS would mean that i would have run put of black pieces - the carrying handle would just have taken too many pieces. it is possible to see the similarities though. the gun takes a 10 brick magazine (1x4 pieces), any more and the mechanism would jam under the stress of the magazine's rubber band. the bricks are inserted in the magazine in alternating rotations - you put the first one in studs up, then the next one upside-down, then the next upright, and so on. this stops the bricks sticking to each other. when you pump the shotgun, a rubber band is pulled back, streching through the barrel, like a crossbow would. when the pump gets near the back, it hits a lever which pushes a brick out of the (inserted) magazine, forward and up to be locked in the barrel, in front of the rubber band. this means that when the trigger is pulled, the bullet is released, and the band can push the brick down the barrel. ----------------------------------------NEW---------------------------------------- i have just taken the gun apart, but when i did i took a photo of the insides - for those of you who want to figure out how it works, this might help: ----------------------------------------------------------------------------------- pics: the left side the right side the two 10-brick magazines they can be locked together, with one upside down, so you can change them easily here you can easily see the bullpup configuration looking in the magazine well looking down the 'sights' (theyre not that good) the pump FPS pump (unpumped) pump (pumped) another view of the pump pumped well thats about it - tell me what you think!


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