Arca/Picatinny Bi-pod Rail Gen-2. 
Includes 10-32 Screws with claw nuts.
Sling swivel hole in the front. 
Rail is made from 7075 Aluminium.  
Cerakoted: Graphite Black(H-146), Burnt Bronze (H-148), OD Green(H-236),Tungsten (H-237) FDE (H-265)
Length:4 3/16. Overall
Width: 1.5 in
Weight: 1.2oz
MADE IN POST FALLS IDAHO, USA