Eagle6 are now making unique products for use in the Tokyo Marui AEG series, especially the blowback and recoil AEGs. Their latest got a long name called the Eagle6 Airsoft Blowback Unit Connecting Bar (Part C) For M4/HK416 Next Generation Recoil Shock Series... "We have made a new product, and now have over 20 unique products made by us  all available for wholesale order.

This is the connecting bar from the tokyo marui blowback unit on the M4 and HK416 series which is a known failure point overtime and use."