Bushmaster Modular Carbine Complete Upper Receiver 5.56 NATO Quad Rail Free Floated Handguard Flip Up Sights F1007565

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One of the main advantages the AR-15 platform offers to users is endless modularity. Take advantage of the versatility of the platform with this Bushmaster upper receiver assembly. The heavy, free floating barrel is fluted to save weight. Flip up sights give you endless options for scope mounting.

This is highly accessorized upper receiver/barrel assembly from Bushmaster's 16" modular carbine. It features a 16" chrome lined chrome moly steel fluted barrel with a milled gas block. A four rail free floating tubular forend combined with the A3 type flattop upper receiver provides all the picatinny rails necessary for mounting sights, scopes or other accessories. The B.M.A.S. rear flip-up sight is a dual aperture detachable unit with a windage knob calibrated to 1/2 MOA clicks. The B.M.A.S. front flip-up sight clamps around the milled front gas block and incorporates an elevation adjustable front sight post. Includes charging handle and bolt carrier assembly. The entire unit is ready for installation on your favorite lower receiver.

Specifications and Features:
5.56x45mm NATO chamber (accepts .223 Remington)
Free floating quad rail handguard
Polymer Rail Panel not included
Crowned Muzzle
Flip up sights
Fluted barrel
Bayonet lug
Flattop upper receiver
Charging handle and bolt/carrier group included
Note: The pictured upper is only a close representation of the upper receiver.