M16A4 Buttstock When it comes to applying iron sights the more time barrel and glued front sight supplies a longer sight radius which makes it much easier to shoot correctly. Heatshields In Handguard – You'll find heatshields on the inside of the handguard to guard the user during extended lengths https://angeloedccv.creacionblog.com/29403638/what-does-knights-armament-quad-rail-mean