7 inch free float quad rail handguard installs on standard carbine length AR-15 rifles and allows for the attachment of tactical accessories such as bipods, grips, or sights. The free float handguard attaches directly to the receiver, without touching the barrel or impacting barrel harmonics, thus allowing for more precise shooting. Crafted from lightweight aircraft grade 6061 aluminum, the quad rail weighs 11 ounces, is 7 inches in length, 2.5 inches in height, 2.5 inches in width, with a 1.7" internal diamter at its narrowest point. The package includes an aluminum barrel nut, castle nut, and anti-rotation set screw.（Please note that it is a whole, and cannot be divided into two parts.）
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<br />10 inch free float quad rail handguard installs on standard carbine length AR-15 rifles and allows for the attachment of tactical accessories such as bipods, grips, or sights. The free float handguard attaches directly to the receiver, without touching the barrel or impacting barrel harmonics, thus allowing for more precise shooting. Crafted from lightweight aircraft grade 6061 aluminum, the quad rail weighs 13 ounces, is 10 inches in length, 2.5 inches in height, 2.5 inches in width, with a 1.7&quot; internal diamter at its narrowest point. The package includes an aluminum barrel nut, castle nut, and anti-rotation set screw.（Please note that it is a whole, and cannot be divided into two parts.）
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<br /> 12 inch free float quad rail handguard installs on standard carbine length AR-15 rifles and allows for the attachment of tactical accessories such as bipods, grips, or sights. The free float handguard attaches directly to the receiver, without touching the barrel or impacting barrel harmonics, thus allowing for more precise shooting. Crafted from lightweight aircraft grade 6061 aluminum, the quad rail weighs 15 ounces, is 12 inches in length, 2.5 inches in height, 2.5 inches in width, with a 1.7&quot; internal diamter at its narrowest point. The package includes an aluminum barrel nut, castle nut, and anti-rotation set screw. （Please note that it is a whole, and cannot be divided into two parts.）