Picatinny Rail Aluminium (M Lok)

Aluminium Picatinny Rails available. 
Most of them new and some barely used.
Pic number reference:

1- $10 each   
2-$20 Grip. Sold
3-$15 each. Sold
4-$20 each. 
5-$25 each. 
6-$30 each. 2 left
7-$15 each. One available 
8-$40 Slant Compensator NEW

Local sale only. 
I can deliver anywhere in Calgary. 
shipping available for buyers expenses.