MK18 5.56 Upper Receiver Group Complete - MK18 10.3" Upper Receiver 5.56 1-7 Govt FDE
All Daniel Defense upper receivers2 options
- Blackfrom $1,299.99, in stock
- FDE, this page
Click to see full view
Daniel Defense
Overview
The Daniel Defense Mk18 Upper Receiver Group is a complete assembly designed for the AR-15 platform, featuring a 10.3-inch Government profile barrel specifically chambered in 5.56 NATO. With a pistol-length gas system, this upper provides reliable cycling and optimal performance, while the 1:7 twist rate ensures stability for a wide range of bullet weights. Commonly found in builds that prioritize compactness and maneuverability, the Mk18 is ideal for close-quarters applications.
Specifications
MK18 5.56 Upper Receiver Group Complete - MK18 10.3" Upper Receiver 5.56 1-7 Govt FDE
2 options
- Blackfrom $1,299.99, in stock
- FDE, this page
Available Merchants(5)
Prices checked
Price Alert
October 2026 on GunPartPicker
Daniel Defense MK18 5.56 Upper Receiver Group Complete - MK18 10.3" Upper Receiver 5.56 1-7 Govt FDE ranked #30 of the 844 upper receivers builders added on GunPartPicker in October 2026, behind the Sharps Bros AR-15 Billet Upper Receiver - SBUR04, with about 1 in every 200 upper receivers added to builds. Down from #18 in September. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on pistol-length gas, and nearly all AR-15.
It was hard to find in October 2026, in stock on only 10 of the 18 days we checked, and today 2 of the 5 retailers we track have it in stock. It dipped to $1,279.99 at Sportsmans Outdoor Superstore for a stretch in October 2026, well under its usual $1,454, so sales do come around. Buying today, the lowest price is $1,279.99 at Sportsmans Outdoor Superstore, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
Daniel Defense Complete Bolt/carrier Group, M16
EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN
Daniel Defense Collapsible Mil-Spec Buttstock, Brown - 21-091-04179-011
No reviews yet. Be the first to review this product!