Here's our picatinny adapter for any rifle with a MIL-STD-1913 or STANAG 2324 rail. 

The adapter is locked on the rail by a clamp and located in the rail slot.  The adapter weighs just 35 grams and is extremely compact.

Our adapters are made from 7075-T7351 Aluminium.  This aluminium is used in the aerospace industry as it's one of the highest strength aluminium alloys available.

The aluminium is protected by hard black anodising.   The surface treatment provides very high corrosion resistance.