If you don't want to use them

This knife is a super small folding knife for outdoor activities and small tasks

you use a 407 mm inner barrel for an outer barrel like this

Eller foretages opladning af magasiner

this is also possible as there is a rail on the top of the rifle for just this

Maple Leaf Macaron AEG Hop up Gummi gas If you don't want toMaple Leafs Maracon is one of the most popular hop up rubbers. With their unique flat inner nub, they provide consistent pressure for maximum precision. Fits TM spec AEG barrels. For optimal rubber selection, follow this table: 50 degrees = <110 m s 60 degrees = 90 120 m s 70 degrees = 110 140 m s 75 degrees = 130 150 m s 80 degrees = >150 m s