The UTG PRO MODEL4 S1 is a six-position collapsible carbine stock engineered for AR-15 and M4 platforms, delivering adjustable length of pull for shooters of varying sizes or when wearing body armor.
- Type: Collapsible Carbine Stock
- Compatible Firearms: AR-15, M4, mil-spec carbine buffer tubes
- Material: Reinforced Polymer
- Finish: Black
- Adjustable: Yes (6 positions)
- Installation: Requires mil-spec carbine buffer tube, castle nut, and end plate (not included)
