SIG Sauer MCX 11.5in 5.56 NATO Upper Receiver w/ Flash Hider (M-LOK, Picatinny)
by Sig Sauer
User Ratings
No ratings yet
Be the first to review this product
Overview
Complete SIG SAUER MCX upper receiver assembly with removable 3-prong flash hider.
Also included is a receiver extension delete stock adapter to mount folding or static stocks/braces that use a vertical 1913 rail system.
What’s included
- SIG SAUER MCX 11.5 inch 5.56x45mm NATO Upper Receiver with Flash Hider Assembly
Specifications
- Manufacturer: SIG SAUER
- Caliber: 5.56x45mm NATO
- Barrel length: 11.5 in
- Barrel profile: M4
- Color: Black
- Gun model: SIG Sauer MCX
- Attachment type: Picatinny
- Gun rail: M-LOK
- Gun type: Rifle
- Bolt carrier group included: MIL-SPEC
- Charging handle included: MIL-SPEC
- Condition: New
- Threads per inch: 1/2x28
Compatibility (manufacturer stated)
Compatible with SIG Sauer MCX
Specifications
- Manufacturer:
- Sig Sauer
- Category:
- upper-receiver
- Platforms:
- AR-15
- Interfaces:
- Muzzle thread: 1/2-28Magpul M-LOKMIL-STD-1913
- Weight:
- 8.5 oz
- Length:
- 11.5"
- UPC:
- 798681682539
- MPN:
- UAMCX556N11BLTBLK
- Required Component:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$1,769.00
Lowest
$1,769.00
Highest
$1,999.99
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertWhat's Included in this Bundle
Similar Products
Bravo Company BCM4 Upper Receiver Assembly Flat Top With Forward Assist 1913 Rail
Bravo Company Manufacturing (BCM)
$129.00
Aero Precision AR15 Assembled Upper Receiver - Anodized Black - APAR501603AC
Aero Precision
$118.99
LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Specwar - 11.5"
LMT
$912.60
Griffin Armament Mk1 Upper Receiver Assembled Aluminum Black
Griffin Armament
$113.95
BCM MK2 Carbine Barreled Upper MCMR-10 - 12.5in
Bravo Company Manufacturing (BCM)
$820.39
AERO PRECISION - 5.56X45 NATO ASSEMBLED UPPER RECEIVER NO AUTO SEAR CUT FOR AR-15
Aero Precision
$119.99
COLT Monolithic AR-15 Pistol Complete Upper Receiver 5.56x45 NATO 11.5" Barrel
Colt
$959.99
Luth-ar UR-01-M16-A A1 Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize
Luth-AR
$180.69
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
5.56 NATO, .223 Remington, and .223 Wylde: Chamber Differences Explained
A technical breakdown of the differences between 5.56 NATO, .223 Remington, and .223 Wylde chambers — what each accepts safely, and how to choose for your build.
5 min read
Guide
AR-10 Receiver Patterns: DPMS vs. Armalite Compatibility
The AR-10 has two incompatible receiver patterns — DPMS and Armalite — that look similar but do not share parts. This guide explains the differences and how to buy correctly.
6 min read
Guide
The AR-10 Platform: What It Is and How It Differs from the AR-15
A practical overview of the AR-10 — its origins, how it differs from the AR-15, available calibers, and when it makes more sense than a standard AR-15 build.
6 min read