Jamel, this rifle has a 15" KeyMod Free Float Rail System. You can change to a quad rail but the KeyMod System just needs the appropriate KeyMod Rail Section to add any accessory and will be lighter overall : budsgunshop.com/catalog/search.php?q=keymod+ra
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Anonymous
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its a 15" KeyMod Free Float Rail System. A quad rail system would be a step back just add the keymod rail adapters on any of the 4 sides of the handguard