Just picked up that new AR fitted with the standard plastic handguard, stock and A2 Grip? Upgrade it with our brand new XTS Basic AR-15 Upgrade Kit! Change out that A2 Grip for the popular Rubberized XTS 301 AR Grip, swap the standard M4 Stock for the Ergonomical XTS 101 Stock, and last but not least, get that hideous plastic handguard off and thro...