Hogue AR 3 extension tube they are designed to work with free-floating handguards. They are intended for use on weapons with a barrel length - carbine or medium length. A low profile Gas Block - such as DPMS Micro.750 or DPMS Micro.936 - is recommended for their use. Color black.
The handguard extension tubes must be used with the Hogue handguard and must be installed on the rifle before the handguard is installed.
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