CMMG 9mm Complete Upper 16" M4A3

9mm M4 Complete Upper Half. Includes: Mil-Spec A3 Receiver, 4140 W.A.S.P. Barrel with 1/10 twist, ramped 9mm Bolt, charging handle. Fully Assembled. Uses a standard AR-15 or M16 hammer. Do not use with the dedicated 9mm hammer.

RRA 9mm Complete Upper Half

Includes: Barrel & Flash Hider Upper Reciever Bolt Hand Guard **Fully Assembled**

Yankee Hill Machine 5.5" 9mm Kit

Product Features Our Full Top End Kits include everything you need to convert a Mil Spec AR-15 type rifle into a 9mm carbine. Only the best products in the industry have been selected for these kits.  These top ends were designed and tested using a...

Yankee Hill Machine Entry Level 9mm Kit

Product Features Only the best products in the industry have been selected for this kit.  These top ends were designed and tested using a MIL SPEC lower receiver with a Hahn 9mm Magazine Adapter and a Standard Hammer...

Yankee Hill Machine Specter Black Diamond 9mm Kit

Product Features YHM is pleased to offer our 9mm Top End Kits. These kits include everything you need to convert your standard AR-15 type rifle to fire 9mm ammunition. Only the best products available have been selected for this kit.  These...

YHM 9mm 16" Complete Upper Half - Diamond

These top ends were designed and tested using a MIL-SPEC lower receiver with our 9mm Magazine Adapter and a Standard Hammer. Due to differences between manufacturers, we cannot guarantee they will work on every lower receiver. Features Include: MilSpec...

YHM 9mm 16" Complete Upper Half - Entry

Mil. Spec. Forged 7075-T6 Aluminum YHM Flat Top Upper Receiver "T" Marked Upper Receiver Forward Assist Installed CMMG Ramped 9mm Bolt Carrier Assembly (YHM-921-BA) 16" Chrome-Moly Vanadium Steel Barrel, Heat Treated to RC 25-32, Threaded 1/2"-36...