For sale is a lighty used (exactly 100rds through it) CMMG M4A1 SOCOM AR A3 upper, 14.5" barrel w/permanent Phantom flash hider (to make it the legal 16") chrome-lined 5.56mm chamber and bore, 1/7 twist, Midwest Inds. 2-piece railed forend and charging handle, no bolt/carrier. If you look on CMMG's website it's: SKU Number: U-1454HA1. Very nice upper, just needing cash for a Jeep project. Asking $600 shipped, USPS money order only.