Overview Reviews Product Description Sig Sauer P320 X-Series Slide Assembly, XRAY3 Sights, R2 Optic, Compatible with 3.9" 9MM Barrel, DLC Finish, Black 8900958 Product Videos Product Reviews Write a Review Write a Review × Sig Sauer SIG P320 X-SERIES 9MM 3.9" OR SH BLK Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *