CMMG Banshee MK4 Upper .22 LR 9 Barrel
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CMMG
Overview
The CMMG Banshee MK4 Upper is a complete upper receiver designed for the AR-15 platform, featuring a 9-inch barrel chambered in .22 LR. This setup allows for a lightweight and compact configuration, making it ideal for close-quarters shooting or training with lower recoil. You’ll frequently find this upper in builds focused on plinking or youth training, where the .22 LR caliber provides a manageable shooting experience.
Specifications
Available Merchants(4)
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Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG Banshee MK4 Upper .22 LR 9 Barrel to a build in March 2026.
It was hard to find in September 2026, in stock on only 2 of the 7 days we checked, and today none of the 4 retailers we track has it in stock right now. It dipped to $540.01 at BattleHawk Armory for a stretch in September 2026, under its usual $596.01 to $649.99, so sales do come around. Listed prices start at $540.01 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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