HOME > AR-9 > 9MM BARRELED UPPERS >

16" 9MM AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 12.62" M-LOK RAIL
16" 9MM AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 12.62" M-LOK RAIL
 
Alternative Views:
MSRP: $360.00
Our Price: $269.99
SALE PRICE: $244.99

Price with Selected Options: $244.99

Stock Status: In Stock


Product Code: MAS-169M0-MDRL-12

Upper Receiver Options:


Barrel Options:


Handguard Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:


***ON SALE - Choose a Bolt Carrier Group:


***ON SALE - Choose a Charging Handle:



Qty:  
DESCRIPTION
 
16" 9MM AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 12.62" M-LOK RAIL

The options listed below come standard with this barreled upper. The drop down options listed above allow you to customize your build. You can leave them as is, change one option or change them all! We let you build your upper the way you want it built!

1. Upper Receiver - 7075 T6 Aluminum A4. Precision Machined to Mil-Spec Tolerances. Black Hardcoat Anodized Mil-Std-171 Type III. M4 Ramps, Forward Assist, Ejection Door.

2. Barrel - 16" 9MM NATO (9x19) 1x10 4150 CrMoV Melonite Nitride Treated Steel

3. Handguard - MAS Defense "Ridgeline" 12.62" Slimline M-LOK Free Floating Handguard - (ID 1.25")

4. Muzzle Device - A2 Half Cage

Bolt Carrier Groups and Charging Handles are sold separately. 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 THIS ITEM.

***80% LOWERS CANNOT BE PURCHASED WITH BARRELED UPPERS OR BUILD KITS. ORDERS THAT INCLUDE THEM WILL BE CANCELLED AND CHARGED A 15% CANCELLATION FEE***.

RELATED ITEMS
FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH AR-9 9MM BOLT CARRIER GROUP - GLOCK AND COLT BCG - MELONITE NITRIDE FORGED CHARGING HANDLE AR-15 - G2 TACTICAL LATCH
Our Price: $24.99
SALE PRICE: $109.99
Our Price: $24.99
FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH AR-9 9MM BOLT CARRIER GROUP GLOCK AND COLT BCG - MELONITE NITRIDE FORGED CHARGING HANDLE AR-15 - G2 TACTICAL LATCH

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 5 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Fast shipping, Worked great. January 7, 2026
: Edward Smith Jr from Cornelius, NC United States  
Fit perfectly tight on a mas defense 80% ar-9 lower. Shot tight groups at 25 yards(farthest the range went), standing, with a red dot. I’m a big fan of the MAS defense rail! As usual super fast shipping.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Nice looking unit March 14, 2024
:  


Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 9mm upper September 29, 2022
: MARTIN SCHWARTZ from Council Bluffs , IA United States  
I have purchased many uppers from MAS Defense and they have been of the utmost quality and when you factor in the price it’s a no brainer!!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 2nd purchase May 7, 2022
: Gordon Grasser from Longview, WA United States  
Everything works just as it is suppose to. I will be happy to use these folks again.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 April 30, 2020
: Dustin Drake from Star City, AR United States  
Shipped quickly
No scratched or tooling marks
Excellent

Was this review helpful to you?