The UTG PRO Model 4 S1 Stock Kit delivers improved cheek weld and shouldering consistency for AR-15 platform rifles.
- Type: 6-Position Collapsible Buttstock Kit
- Compatible Firearms: AR-15, M4, and rifles with mil-spec carbine buffer tubes
- Material: Reinforced Polymer
- Finish: Black
- Adjustable: Yes (6 positions, 10.5″–13.5″ LOP)
- Installation: Drop-in, mil-spec buffer tube compatible
- Features: Dual QD sling sockets, textured rubber buttpad










