On consignment at our shop is this Smith & Wesson M&P-15 in .300 AAC (SP 09361).  Features Quad rail and angled foregrip

Brand: Smith & Wesson 
Model:
 M&P-15
Type:
 Rifle
Caliber/Gauge:
 .300 AAC

Finish: Matte
Sight:  Pop up front and rear 
Barrel:
 16"