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CMMG
Overview
The CMMG Banshee 300 MK17 Complete Lower is a fully assembled lower receiver designed specifically for 9mm builds on the AR-9 platform. This complete lower features a RipBrace, which enhances stability and control during operation, making it a great choice for shooters looking for a compact and effective setup. This product is commonly found in builds aimed at versatility and maneuverability, ideal for both competitive shooting and personal defense scenarios.
Specifications
Available Merchants(1)
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Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG Banshee 300 MK17 Complete Lower 9mm RipBrace to a build in February 2026.
Today the one retailer we track is out of stock. Listed prices start at $525.96 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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