Feature：

➤ 4 inch
➤ Durable CNC-machined aluminum construction
➤ TDC hop-up kit improves your unit to place even, steady vertical pressure on BBs and increase precision and accuracy
➤ Top-mounted picatinny 1913 / 20mm RIS for mounting optics, lights, lasers, and other accessories
➤ Bottom RIS for mounting grips, lights, lasers, or other accessories
➤ Fiber optic front sight
➤ Adjustable competition-style rear sight
➤ 14mm negative (CCW) threaded barrel
➤ Includes removable compensator

➤ 6 inch
➤ Durable CNC-machined aluminum construction
➤ TDC hop-up kit improves your unit to place even, steady vertical pressure on BBs and increase precision and accuracy
➤ Top-mounted picatinny 1913 / 20mm RIS for mounting optics, lights, lasers, and other accessories
➤ Bottom RIS for mounting grips, lights, lasers, or other accessories
➤ Fiber optic front sight
➤ Adjustable competition-style rear sight
➤ 14mm negative (CCW) threaded barrel
➤ Includes removable compensator