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Description
The Dirty Bird Industries M16A1 20" 5.56 Retro Upper Assembly is the next iteration in the line of DBI's popular Complete Uppers. Dirty Bird Industries has sourced some of the finest parts in the industry to make sure that this complete upper is not only a great throwback build and aesthetically accurate, but also performs flawlessly in the field by taking advantage of modern enhancements to the platform.
Notable enhancements include: 1:9 twist instead of 1:12 which will stabilize a greater variety of bullet weights, M4 style feed ramps for improved reliability and a black class 3 type 2 anodizing to match most modern mil-spec lower receivers.
20″ 5.56 Lightweight Contour 1:9 Rifle Length Barrel w/ FSB
Chambered in 5.56
1:9 Twist Rate
Button Rifled
A2 Front Sight Base w/ Front Sight Post Installed
M16A1 Assembled Upper Receiver
7075-T6 Forged Aluminum
Factory Installed Teardop Forward Assist & Dust Cover
Factory Installed Dual Aperture Rear Sight
Integrated M4 Feed Ramps
Fully Compatible with any Mil-Spec Lower Receiver
