Home / Accessories / Rail Kits / Pro S4 / Benelli M4 Quad Rail Kit Pro S4 / Benelli M4 Quad Rail Kit$18900 Compatible with the Black Aces Tactical Pro S4 & Benelli M4 No gunsmithing required One-piece T6 6061 construction 8-ounce weight Black anodizing coating Full installation kit included Pro S4 / Benelli M4 Quad Rail Kit quantity Add to cart SKU: BQR4 Categories: Accessories, Rail Kits Product ID: 2770 Additional information Additional information Weight 0.5 lbs Related products Spare Hardware Kit – Mossberg 500/590/Mav88 Quad Rail from: $1500 Select options Spare Hardware Kit – Remington 870/1100/1187 Quad Rail from: $1500 Select options Black Aces Tactical Side Shell Holder Kit from: $1500 Select options