Specifications:<br />Material：aircraft aluminum 6061 T6<br />Flat Dark Earth color (TAN)<br />Quad Rail Handguard<br />Fits .223 /AR15<br />Free Floating Quad Rail Mounting System<br />Free float design， allowing for direct mount to the receiver<br />Picatinny on all 4 rails<br />Very easy to install (tool included)<br /><br /><br />Model:  M16-7T<br />Dimensions 7" (length) x 2.5" x 2.5" (width)<br />Weight : 300g<br /># of Slots<br />14 on the top rail<br />12 on the side and bottom rails<br /><br />Model:  M16-10T<br />Dimensions 10" (length) x 2.5" x 2.5" (width)<br />Weight : 420g<br /># of Slots<br />24 on the top rail<br />22 on the side and bottom rails<br /><br />Model:  M16-12T<br />Dimensions 12" (length) x 2.5" x 2.5" (width)<br />Weight: 450g<br /># of Slots<br />29 on the top rail<br />27 on the side and bottom rails<br /><br />Model:  M16-15T<br />Dimensions 15" (length) x 2.5" x 2.5" (width)<br />Weight : 500g<br /># of Slots<br />36 on the top rail<br />35 on the side and bottom rails<br /><br />Package:<br />One quad rail+barrel nut + jam nut+wrench