I can't explain it better than Wiki, so here you go "The Picatinny rail, alternatively known as the MIL-STD-1913 rail, STANAG 2324 rail, or simply "Tactical Rail" is a bracket used on some firearms in order to provide a standardized mounting platform, similar to the Weaver rail mount."
Source : http://en.wikipedia.org/wiki/Picatinny_rail
| picatinny_rail.skp | 228.6KB | |
| picatinny_rail.stl | 148.2KB |
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