Angel Custom 12mm+ to 14mm- CNC Steel Adapter for KWA/KSC MP7 Knee Pads They also come with bearings

They also come with bearings to allow the spring to rotate naturally upon compression and decompression

1-4x Optical Zoom

Reinforced alloy bolt construction

this M249 is of full metal construction

-          AEG includes: -

Angel Custom 12mm+ to 14mm- CNC Steel Adapter for KWA/KSC MP7 Knee Pads They also come with bearingsFeatures Steel Construction A required part for a KWA KSC H&K Umarex Heckler & Koch MP7 to use a 14mm Airsoft mock silencer or tracer unit Precision perfect fitted for KWA MP7 GBB 100% CNC Milled process for maximum durability and precision This is an essential part for your KWA KSC Umarex H&K Gas Blowback MP7 to take on any 14mm thread accessory such as mock silencers or tracers.