The DPMS Mini-SASS AR-15 complete upper assembly comes fully assembled and ready to pin onto any standard Mil-Spec lower receiver. It consists of a flat top upper receiver with an 18" Teflon-coated fluted stainless steel bull barrel. It has a free-float quad rail handguard with rail covers and is equipped with front and rear flip up sights. The upper comes complete with bolt carrier group and charging handle.

Specifications and Features
DPMS 60584
5.56 NATO (also accepts .223 Remington)
A3 flat top mini-SASS upper receiver
18" Teflon coated 416 stainless steel fluted bull barrel
Twist rate 1:8"
Muzzle threaded 1/2x28
Panther flash hider
Free float quad rail handguard with rail covers
M4 feed ramps
Front and rear flip up sights
Bolt carrier group and charging handle included