WA15-16 HBAR 5.56
standard handguard
 

WA15A4-16 HBAR shown

Available with... A2 or A4 (A3 flat top) assembly
 

5.56  16" Assembly
Model# WA15A2-16 HBAR               16"bbl A2 
Model# WA15A4-16 HBAR               16"bbl A4 

A4 rifles include this folding MAD sight or the RRA Dominator 2
Your Choice
     
MAD (Multiple Aperture Device) detachable
click link for better detail on the MAD

DOMINATOR 2 Rear Sight/EOTech Riser has 7 slots, Elevation and Windage adjustable
made by Rock River Arms