Arthurian Airsoft Excalibur Offspring rail system – Crimson
Replacement Crimson red rail system for the Excalibur Offspring M4 AEG. These rails screw straight onto most standard AEG AR type upper receivers and outer barrels.
This rail system uses a keymod attachment system allowing you to fix standard Keymod attachments to both sides and underneath as well as additional 20mm picatinny rails for more standard attachments.
Equipping this rail may require the use of barrel shims or either threadlock or Loctite to fix it into the perfect, flush position.