Any stock that can attach to a Picatinny rail will work, and though we’re not saying we modified a Micro Uzi stock to fit one, we were able to modify a Micro Uzi stock to fit the FCU.Īdmittedly, the complete X01 looks a skosh like a Beretta Storm and a SIG MCX had a weird baby. The X01 is designed to accept a SIG MCX collapsible stock or brace, though you can order one without. With that said, you do currently need a P320 slide, chassis, and barrel (at least for now - more on this later).
Compact slide with a full size barrel certainly looks funky in pistol form Designįunctionally, what separates the FCU X01 from other pistol-to-carbine conversions is that a complete pistol isn’t needed to insert inside a frame à la the CAA Roni, Hera Arms Triarii, or FAB Defense KPOS.