Building an RPD-like gun from scratch
The RedNeckEngineer has blogged about his modern RDP-like rifle build. He opted to make a hammer fired mechanism instead of the original striker mechanism. The striker mechanism works fine in the original fully automatic open bolt RDP, but is unreliable in semi-automatic builds that have to fire from a closed bolt (BATFE rules). RedNeckEngineer used a H&K G3 lower and fire control group to provide a hammer mechanism.
The barrel was cut down to 14.5″ and then a flash hider welded on to increase the length and make it 16″ legal. He removed the G3 pistol grip and replaced it with an AR-15 grip and a mechanism to keep his finger off the trigger unless the rifle is push forwards, allowing for easy bump firing (this is not pictured in the above photo).
[ Many thanks to Commander Zero for the tip. ]
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kind of reminds me of a guy on ARF who was trying to build his own PS90 style PDW. Didn't read through his posts though.
Thanks for the link!
The bumpfire stock was just a mishmash of stuff I had laying around. I wanted something as close to full auto as i could get without a tax stamp and when the stock works right, it's pretty dang close.
Like with my home built .50 BMG, I'm just never satisfied by the way my builds look, so I'm probably going to redesign the stock.
The hand guard was crap. It looked much better in my head than it did on the mill. I think making one out of aluminum that closely resembles an M60 would look good.
Thanks again for stopping by and for the kind words everyone.