Designed to improve the reliability and function of an AR-15 platform, it features unique drain holes for rapid water drainage and offers 10 stock adjustment positions. This 10-position buffer tube offers significantly more length of pull adjustment range than standard 6-position mil-spec tubes, accommodating a wider variety of shooter body types, gear configurations, and shooting positions without compromise, and the maritime design incorporates drain holes that prevent water accumulation in wet and submerged operating environments. Key Specs & Features Length: 8.00 inches Material: 7075-T6 Aluminum Finish: Hardcoat Anodized (Mil-Spec/Class 3A Thread) System Type: Intermediate / A5-style Drainage: Maritime design allows for quick water clearance if submerged.