Stern Defense AR-15 SD 4 MOD4 Complete Upper Receiver 9mm Luger 4" M-LOK
MidwayUSA · Complete Uppers
$399.02
In stock
- Current
- $399.02
- Lowest seen
- $399.02
- Highest seen
- $443.48
Tracked since May 29, 2026 · 1 price change.