CMMG 22B5BD4AB Banshee MK4 .22 LR 4.50\" Upper Receiver, Armor Black, M-LOK Free-Float Handguard for AR-Platform
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Overview
The CMMG 22B5BD4AB Banshee MK4 is a complete upper receiver designed specifically for the AR-15 platform, featuring a compact 4.50" barrel optimized for .22 LR caliber. This upper is equipped with an M-LOK free-float handguard, allowing for flexible accessory attachment while maintaining a sleek profile. It's a popular choice for builders looking to create lightweight, versatile setups, particularly for rimfire applications.
Specifications
CMMG 22B5BD4AB Banshee MK4 .22 LR 4.50\" Upper Receiver, Armor Black, M-LOK Free-Float Handguard for AR-Platform
Available Merchants(5)
Prices checked
Price Alert
Build history on GunPartPicker
Builders have been adding the CMMG 22B5BD4AB Banshee MK4 .22 LR 4.50\" Upper Receiver, Armor Black, M-LOK Free-Float Handguard for AR-Platform to their builds on GunPartPicker since February 2026. All time, it ranks #283 of the 1,683 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in .22 LR and nearly all AR-15.
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 $522.01 at BattleHawk Armory for a stretch in September 2026, well under its usual $584.49 to $596.01, so sales do come around. Buying today, the lowest price is $584.49 at Ammunition Depot, above September's low of $522.01, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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TriggerTech Diamond Blue Flat Single-Stage 1.5-4.0 lbs Adjustable
Fortis SHIFT Vertical Grip - M-LOK
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