I kinda built this one from scratch... It's based off an MC-51... I put a CA metal upper receiver on it, a CA metal lower receiver on it, a CA metal cocking tube, and a CA metal SD front set (with metal MP5SD supressor). This gun is H-E-A-V-Y; heavier than I had hoped it would be. Then, I removed the retractable stock and put a PSG-1 stock on. I also put a Carrot PSG-1 grip on it. Internally, it's got an aluminum piston head, PDI 170 spring, metal bushings, and systema nozzle.
I also bought an MSG-90 conversion kit, AUG 6.04 barrel and Bore up NB Type-0 cylinder so I can convert it into an MSG-90-type rifle. I bought a Cyrus scope mount for it, but no scope yet.
I bought 4 standard cap mags, 1 hi-cap mag and 1 PSG-1 type mag. I'll post some pics soon.
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