Home / Accessories / Rail Kits / Pro S4 / Benelli M4 Quad Rail Kit Pro S4 / Benelli M4 Quad Rail Kit$17900 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 Shockwave Rail Kit $21400 Add to cart Mossberg 500, 590, and Maverick 88 Quad rail kit $15000 Add to cart Out of stock Slugs – 12 Gauge High Velocity Slug – Case Price $14200 Read more