AR-9 Upper Assemblies – 9mm Complete Uppers

AR-9 Complete Uppers | Slick Side & LRBHO 9mm Uppers

AR-9 upper assemblies for 9mm pistol caliber carbines and AR pistols, from 3" micro uppers to 16" carbine uppers. Choose slick side or side charging, LRBHO or non-LRBHO, and handguards from short shrouds to 15" M-LOK, with flash cans, compensators or fake suppressors.

Most Moriarti AR-9 uppers come complete with the blowback bolt carrier group (BCG) and charging handle, ready to install on a compatible AR-9 lower. Brands include Moriarti, Angstadt and Foxtrot Mike. Upper receivers are not serialized, so they ship directly to your address where legal.

FAQ

What does LRBHO mean?

Last round bolt hold open: the bolt locks back after the last shot. It needs a matching LRBHO lower and magazine. Non-LRBHO uppers are listed as such.

Do these uppers include the BCG?

Most do; each listing says if the bolt carrier group and charging handle are included.

Can I put a barrel under 16" on a lower with a stock?

Only with an approved ATF Form 1 or Form 4 first: a stock plus a barrel under 16" makes a short-barreled rifle (SBR). On a pistol lower with a brace or bare buffer tube it can be built as a pistol where legal.