Primary Weapons Systems MK116 Mod 1-M 16.10" Upper .223 Wylde 1:8 M-LOK Rail Mid-Length, Black
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Primary Weapon Systems
Overview
The Primary Weapons Systems MK116 Mod 1-M upper receiver features a complete assembly with a 16.1-inch barrel designed for the 5.56 NATO caliber, making it a versatile option for various shooting applications. The mid-length gas system enhances reliability and reduces recoil, while the 1:8 twist rate allows for optimal stabilization of a wide range of bullet weights. This upper is commonly found in builds focused on precision shooting and general-purpose use, capitalizing on its balanced performance characteristics.
Specifications
Primary Weapons Systems MK116 Mod 1-M 16.10" Upper .223 Wylde 1:8 M-LOK Rail Mid-Length, Black
Available Merchants(5)
Prices checked
Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the Primary Weapons Systems MK116 Mod 1-M 16.10" Upper .223 Wylde 1:8 M-LOK Rail Mid-Length, Black to a build in April 2026.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $1,049.95 at Sportsmans Outdoor Superstore for a stretch in September 2026, under its usual $1,129.95, so sales do come around. Buying today, the lowest price is $1,129.95 at Brownells, above September's low of $1,049.95, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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