G&G FAR 556 Rapid Folding M4 AEGWARNING: Folding and unfolding this improperly will cause structural damage to this Airsoft gun, not covered by warranty. Be sure to ask for a demo ! Features Ultra lightweight polymer receivers Rapid folding design lets you fold both the stock and front end for an ultra compact package to transport, store, or even carry onto the field! M LOK handguard features continuous 1913 Picatinny 20mm RIS along the entire top length and M LOK slots on the 3, 6,