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to provide a fast, secure, and enjoyable experience. by Milo, from OH, United States Asked on December 20, 2021
The FM Products Gen 2 Ultra Light Free Float AR15 M-Lok Handguard is a free float system that uses a barrel nut. You Colt M4 Carbine uses a delta ring and fixed front sight and will not be compatible with this rail unless you remove the delta ring, and change your fixed front sight to a low profile gas block. At that point, you can use any length handguard you want.