HK416 Upper Receiver Kit - 10.4" - 5.56

HKP 416 10.4" 5.56 Complete Upper Kit Complete

Each kit includes the complete upper assembly, bolt group, tungsten buffer, & high-reliability SS recoil spring. This upper kit is a complete gas piston HK 416 style upper assembly that will drop on your mil-spec lower or an STS 416 lower. Each barrel kit will work on any mil-spec lower. Each unit is test fitted on HK & mil-spec lowers for accuracy and compatibility. 

Each US made 10.4" upper receiver kit includes:

• Proven & reliable gas piston design
• 10.4" 416R Stainless 1/7 twist 5.56 fully Nitrided barrel
• Muzzle end threaded 1/2x28 with A2 flash hider and crush washer
• Enhanced stainless steel barrel nut
• Newer ultra desirable updated 416 stainless steel vented" gas block
• True spec integrated bayonet lug & ambi sling loops on gas block
• Nitrided gas piston with gas piston rod assembly installed
• Proper HK 416/MR556 height upper receiver with forward assist
• Polymer ejection port door and assembly installed
• 416 spec bolt carrier
• HK 416/MR556 billeted quad rail (no unsightly welded locking tabs)
• Stainless steel enhanced buffer spring
• Tungsten filled buffer

No FFL required as the upper assembly is considered parts & not an FFL item.* Should not be used with a suppressor, unless it is a zero pressure suppressor *