MK109 Mod 2-M 300 AAC Blackout Complete Upper Receiver - MK109 Mod 2-M 300 AAC Blackout 9.75" Bbl Complete Upper
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Primary Weapon Systems
Overview
The Mk109 Mod 2-M 300 AAC Blackout Complete Upper Receiver from Primary Weapon Systems features a 9.75-inch barrel specifically designed for the 300 Blackout caliber, making it an excellent choice for short-barreled applications. This complete assembly allows for straightforward installation on your lower receiver, delivering reliable performance and enhanced versatility for a range of shooting scenarios. This upper receiver is commonly found in compact builds where maneuverability and suppressor compatibility are prioritized.
Specifications
MK109 Mod 2-M 300 AAC Blackout Complete Upper Receiver - MK109 Mod 2-M 300 AAC Blackout 9.75" Bbl Complete Upper
Price and stock
The Primary Weapon Systems MK109 Mod 2-M 300 AAC Blackout Complete Upper Receiver - MK109 Mod 2-M 300 AAC Blackout 9.75" Bbl Complete Upper was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $1,299.95 at Brownells for when it comes back.
Prices checked · refreshed daily across 37 retailers
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