CMMG Upper, 9MM, 16" Barrel, Flat Top, A2 Front Sights, Black Finish 90B1AA2
9mm M4 CMMG Complete Upper. Featuring Mil-Spec A3 Receiver, 4140 WASP
Barrel with 1:10 twist. The 9mm ramped bolt uses a standard AR-15 or M16
hammer. Do not use with the dedicated 9mm hammer. It also features "F"
marked front sight.
CMMG INC. MK9 LE UPPER GROUP
•Includes F-Marked Front Sight Base
•Forged 7075-T6 aluminum M4 type upper
•Nitrided 4140 CrMo steel barrel
•M4 type 2-pc handguard