Mossberg 590 Picatinny Scope Mount w/12 GA Side Saddle Shell Holders & Plate. 100% brand new Tactical Picatinny/Weaver Rail Scope Mount 13 Slots for FOR MOSSBERG 500,590,835 The picitinny/Weaver Scope Mount is for Mossberg Model 500 and similar Shotguns. Mount has 13 position slots. Comes with allen wrench and 4 screws Great way to mount a scope, sight flashlight, lazer or other accessory to your Mossberg. Specifications: Color: Black Material: Aluminum Size: 14cm/5.5" Length (13 Slots) Side Saddle Shell Holder for Mossberg 500 Fits 12 Gauge shotguns with long action slide forend that measures 7 3/4" The six round side shell carrier offers quick access to ammunition Quick detach design Heavy duty polymer shell holder Aluminum mounting plate Mounting hardware and tool included Specifications Dimensions 7" x 2.25" Weight 5.20 oz Material Aluminum, polymer Color Black Contact us Because of the time difference,I always reply your message within 24 hours, so feel free to send me message anytime and pls wait for my reply for you Feedback As long as you meet problem with the deal, before you leave feedback, give me a chance to solve the problem for you, thanks.