Dirty Bird 20" M16A2 Enhanced Retro AR 15 Complete Upper

Dirty Bird 20" M16A2 Enhanced Retro AR 15 Complete UpperThe Dirty Bird Industries M16A2 20a ^2 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 1:7 which will stabilize some of the most common bullet weights out there, a lightweight contour, and a black class 3 type 2 anodizing to match most modern mil-spec lower receivers.20a ^2 5.56 Lightweight Contour 1:9 Rifle Length Barrel w/ FSBChambered in 5.561:9 Twist RateButton RifledA2 Front Sight Base w/ Front Sight Post InstalledNon Chrome-LinedM16A2 Assembled Upper Receiver7075-T6 Forged AluminumFactory Installed Mil-Spec Forward Assist & Dust CoverFactory Installed A2 Rear SightFully Compatible with any Mil-Spec Lower ReceiverA2 Style HandguardA2 Flash HiderMade in the USA - Backed by Dirty Bird Industries' Limited Lifetime Warranty