Newest style Crosman 1377 pistol. Some of the upgrade work has been done for you, leaving plenty still on the table to build it up any way you want. Power adjuster. And extended bolt/probe. Transfer port has been enlarged as well. No other mods to valve. Piston, or trigger have been done. Sends cphp ammo down range at 598 fps@ 10 pumps. Lower 48, $110 shipped, Paypal f/f, or trade for .22 cal RWS Super-h-point ammo. Also interested in a crosma 1077 with wood stock. 
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