This DIY build kit comes completely unassembled, and is ready to build.  Just add a lower receiver (not included), and you are ready to head to the range!

* You will need armorer's tools and a bench vise to assemble this kit; tools are NOT included. *

Kit Specs & Features:
16" 5.56 Nato, 1:8 twist, M4 contour barrel/parkerized
A2 birdcage flash hider w/crush washer;
15" MLOK free float handguard
Carbine length gas tube
.750 low profile steel gas block
AR15 5.56/.223/ stripped billet upper receiver w/M4 feed ramps
5.56 Bolt carrier group
5.56 Mil-Spec charging handle aluminum w/steel latch
Dust cover
AR15 standard receiver end plate
Mil-Spec castle nut/steel
Mil-spec 6 position buffer tube 
M4 6 position stock
Carbine recoil spring
3 oz buffer 
Complete lower parts kit
Standard A2 style black pistol grip