Selling my HPA Scar-h and Scar-H SSR set-up. It’s a great design and everything works great. Due to the Protech MK2.5 system the sound is dead silent with the SSR upper and the rifle is nice and intimidating. The FCU also has set-ups for three different uppers so you just take out the lower, change one setting, and you’re good to go on another set-up! It literally takes about 10 seconds to swap the lower out since it’s just held in by one pin. I wanted to make the system adaptable and easy. The Scar-H Upper has a mad bull 6.03x300mm Barrel Installed and the Scar-H SSR Upper has a 490 x 6.01mm tightbore barrel, namatzu Flat Hop Nub with roller bar, and flat Hop bucking. Ambidextrous fire selector, mag catch, and changing handles all work great. This was installed professionally and alignment is 100% centered along with nothing left missing or non functional. Also included is 10 midcaps, a $220 value. I also have a one of a kind 3D printed scar-h Hop up unit that has a TDC mod for even better shots. With .48’s the SSR was shooting crazy far. Also, there are no feeding problems at all, not even once. If you have any questions feel free to ask! NO TRADES, NO PARTING.