This is an complete set of parts to assemble a 9mm upper with a Faxon 8.5 inch barrel. The set comes complete with a Faxon 9mm bolt.
Aero Precision M4E1 enhanced upper.
Aero Precision AR15 Enhanced M-LOK Handguard, Gen 2 (1.72" inside diameter fits most muzzle devices and 1.5" suppressors)
Faxon 8.5" TAPER, 9MM pistol caliber carbine barrel, blowback, 4150 QPQ 1/2x28 threads.
Faxon 9mm bolt.