Matador Arms MAT-9K Roller Delayed Bufferless Upper Receiver Assembly 9mm Luger 5" Barrel FDE

Matador Arms Upper Reciever Mat-9K 9mm 5 inch Barrel 1-10 Twist 1/2x28 Threads FDE. The 9mm upper is machined for maximum weight reduction slim profile and compatibility with bolt catches and lower receivers. The upper is also built with a tapered multi-material 4-piece trunnion system to maintain mechanical accuracy and durability. This is the shorter version with a five inch barrel. Specifications for Matador Arms Mat-9K 5 inch 9mm Upper Reciever: Manufacturer: Matador Arms Caliber: 9mm Luger Barrel Length: 5 in Barrel Profile: Slim Barrel Twist Rate: 1-10 Threads per Inch: 1/2x28 Finish: Anodized Fabric/Material: 4140 Nitrided Steel Gun Rail: M-LOK Gun Make: AR Platform Condition: New Magazine Included: No Charging Handle Included: MIL-SPEC Features of Matador Arms Mat-9K 5 inch 9mm Upper Reciever Non-reciprocating steel charging handle (ambidexterous) 4140 Nitrided steel bolt and action parts 6061-T6 anodized upper receiver 4150 Lightweight Nitrided Barrel 5in long 1:10 twist 1/228 threads NATO 1913 Spec top rail 1 Mlok slot (both sides bottom) Compatible with LRBHO (Last Round Bolt Hold Open) lower receiver Ready to run with a Suppressor right out of the box Package Contents: Matador Arms Mat-9K 5 inch 9mm Upper Reciever Matador Arms 850045441142: Upper Reciever Mat-9K 9mm 5 inch Barrel 1-10 Twist 1/2x28 Threads FDE