Laylax got some new First Factory Outer Barrels for the Tokyo Marui's Next Generation & Standard M4 AEGS. Designed for the various free float handguards, it is available in three lengts, 6.5", 8.5", and 10.5". An O-ring is insalled at the joint part of each barrel piece to prevent it from getting loose. It has the heat gradation (gradient) treatment to give it a nice look.