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
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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
August 2026 on GunPartPicker
Daniel Defense MK18 5.56 Upper Receiver Group Complete - MK18 10.3'''' Upper Receiver 5.56 1-7 Govt FDE ranked #28 of the 690 upper receivers builders added on GunPartPicker in August 2026, behind the Daniel Defense 11.5" 5.56 NATO 1:7 Carbine AR-15 Complete Upper - 10" MFR XS M-LOK Rail, with about 1 in every 167 upper receivers added to builds. Up from #39 in July. 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 August 2026, in stock on only 11 of the 21 days we checked, and today 3 of the 5 retailers we track have it in stock. Prices barely moved in August 2026, holding around $1,470.85, so there haven't been real sales lately. Buying today, the lowest price is $1,279.99 at Sportsmans Outdoor Superstore, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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