RA Tech New 2015 Version CNC Machined Steel Bolt Carrier for WE-Tech M4 / M16 Airsoft GBB Rifles - Black Other Magazines The inner barrel design ensures

The inner barrel design ensures all shots exits the tube

5" is as real as it gets

An HPA conversion will allow you to adjust muzzle energy on the fly

We will not guarantee a gun returned by a certain date

Manufacturer: We-Tech

RA Tech New 2015 Version CNC Machined Steel Bolt Carrier for WE-Tech M4 / M16 Airsoft GBB Rifles - Black Other Magazines The inner barrel design ensuresHeavy duty precision CNC machined steel construction Weather resistant matte parkerized finish Heavy weight for added recoil New reinforced gas key Reinforced steel bolt stop included Compatibility: For WE Tech M4 M16 Airsoft GBB RiflesMaterial: SteelManufacturer: RA Tech