1.Only install onto 0.75 inch regular barrel and standard gas tube
2.Diameter: 19mm (0.75 inch)
3.Length: 25.4mm (1.0 inch)
4.Overall height: 37.5mm (1.5 inch)
5.Weight (net): 43g (1.5 ounce)
6.Use supplied hex hey to fasten and release onto the barrel
7.High quality Steel Material
8.Shock proof designed for real fire caliber
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