Description:

Our Combat Series uses high quality components while keeping the cost down. Why buy a cheap quality upper when you can buy a custom high quality upper at an affordable price? The Rainier Combat Series Upper starts off with a Cold Hammer Forged, Chrome Moly Vanadium (CMV) chrome lined barrel with Direct Impingement gas operation. All our custom shop uppers are built using the highest quality of components, test fired and ready to go. When reliability matters most, professionals choose Rainier. All our custom uppers come complete with a limited life time warranty on all parts & workmanship.

Component List:

• 16″ Cold Hammer Forged 1:7 5.56MM Chrome lined Barrel - Carbine Gas
• Rainier Arms Forged Milspec M4 Upper Receiver
• Mil Spec Full Auto Bolt Carrier Group
• 5.56MM MP Tested Bolt with Crane O Ring Installed
• Magpul MOE Handguards
• Milspec Charging Handle
• Rainier Arms Xtreme Tactical Compensator