Briley Shotgun Magazine Extension with Picatinny Rail 12 Gauge (1100,1187,870)

Magazine Extension with Picatinny Rail:  This is the same sturdy Briley magazine extension made to accept a dual Picatinny rail. The system includes a dual Picatinny rail with QD attachments for slings. The Picatinny can move at least 270° around the tube and for optimum positioning and is locked down firmly by a castle nut using a dedicated supplied wrench. Hang you favorite light or laser on it or both at the same time. Package includes magazine tube spring.   

Fits:
Remington 1100,  1187, and 870 Shoguns only.

Overall Length:
+2 shots - 7.000"
+4 shots - 11.375"
+6 shots - 13.500"

Outer Diameter 1.2"