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CMMG 99B17FD-AB Banshee 9mm Upper Group for AR-Platform. Designed for compact 9mm AR builds, these upper groups work with standard AR-15/Mk4 lowers and 9mm magazines. They include a bolt carrier group and zeroed accessories such as a polymer dust cover and ambi charging handle, plus a linear compensator muzzle device. Barrel length is 5 inches with a 1:10 twist. Barrel material is 4140CM SBN with Cerakote Standard finish. Upper receiver is billet 6061-T6 aluminum. Handguard is CMMG EML4 M-LOK. O…
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