Get from Amazon : http://www.amazon.com/gp/product/B003RC6RWS?tag=wayofcats-20 <br /> <br />Weaver Tactical AR-15/M16 Flat Top Riser Rail <br /> <br />For AR-15M16 flat top rifles <br />Aircraft Grade 6061-T6 Aluminum Type III hard coat anodized <br />Provides optimal mounting height and eye relief for numerous opticring combinations <br />Hand adjustable knobs for no-tool installation and removal Quick Detach model only :
