Picatinny rails have become one of the most used mounts on the market. The material from which the rail is made is aluminium or steel.
Picatinny Rail
TDI Arms Rear AK Sight Rail
See All Open Sight: Part 1
The Picatinny Rail - Mounting Solutions Plus Blog
CSW Britannia Picatinny Rail
Ladies and Gentlemen, strap yourselves in…pic rail HYDRAS are
The Virtues of a Picatinny Rail
ToopMount Picatinny Rail Base Mount 3-Piece for India
Rail Picatinny compact 45 degrés Vector Optics, rail picatinny
Element Offset Light Mount w/ Picatinny Rail Adapter for M-LOK and
Accu-Tac Bipod Picatinny Rail Mount
Vector Optics FD Tactical 30mm Precision High Weaver/Picatinny Rings
EMG Daniel Defense MK18 RIS II AR-15 Free Float Picatinny Rail by
Picatinny rail - Aluminium or Steel - Optics Trade Blog
Rail Picatinny compact 45 degrés Vector Optics, rail picatinny