The M4 Adjustable Carbine Buttstock Assembly is a complete kit that includes everything you need to assemble a carbine buffer system on your .223/5.56 AR lower. The kit includes an M4 "Waffle" Buttstock . Comes complete with Mil-Spec 6-position carbine Buffer Tube, .223/5.56 Buffer, Buffer Spring, Latch Plate and Lock Ring.

• M4 Waffle Buttstock.
• 6-Position Mil-Spec Carbine Buffer Tube.
• .223/5.56 Carbine Buffer Spring.
• 3.2 oz Buffer Body.
• Latch Plate and Lock Ring.