CMMG 22B8F8BAB Banshee MK4 22 LR 9", Armor Black, M-LOK Free-Float Handguard for AR-Platform
Dont build a .22 LR that looks like an AR, build an AR that happens to be chambered in .22 LR. This BANSHEE upper group is built on the Mk4 platform, and is designed to work with any standard AR15 lower group and use .22 AR Conversion Mags.