List: $413.99Sale: $ 342.99
A4 Upper Receiver
M4 Feed Ramps
Black Hardcoat Anodized Mil-Std-171 Type III
Precision Machined to Mil-Spec Tolerances
Forged From High-Grade 7075 T6 Aluminum
Mil-Spec Forward Assist and Ejection Door
16" 300 AAC Blackout 1x8 4150V MidWeight Melonite Nitride Barrel
Pistol Length Stainless Steel Gas Tube
.750 Low Profile Steel Melonite Gas Block
MAS Defense "NERO" 12.62" Slimline M-LOK Free Floating Handguard
A2 Flash Hider
The Bolt Carrier Group and Charging Handle are not included. Please see "Related Items"
below or go to our Bolt Carrier Group and Charging Handle Section to choose one.
All barreled uppers are head spaced and test fired to ensure function.
ALL LAWS APPLY. IT IS THE RESPONSIBILITY OF THE BUYER TO UNDERSTAND ALL
LAWS REGARDING PURCHASE AND OWNERSHIP OF THIS UPPER. WE STRONGLY
URGE YOU TO CONTACT YOUR LOCAL FFL AND/OR THE ATF WITH ANY AND ALL
QUESTIONS TO MAKE SURE YOU UNDERSTAND THE LAW BEFORE PURCHASING
Product Code: MAS-163B1-MDNM-12