Although the M4 configured weapon system is extremely popular today, GG&G had many requests from their customers to manufacture a MIL-STD-1913 Under Forearm Integrated Rail for the AR15/M16 Rifle. The new GG&G ETI UFIR is in response to those requests. What makes it extremely unique, is that it can be installed into the vent holes of the lower handguard without removing it from the weapon. In addition, no backing bushing, nut-serts or miscellaneous fastners of any kind are required. The patent pending integral camming attachment system allows the rail to be easily installed and removed with a flat tip screwdriver without any alteration to the handguard.

The ETI UFIR at just over 5 inches long is manufactured from 6061-T6 aluminum alloy and is Type III hard-coat anodized matte black to mil-spec. All steel components are manganese phosphated black. Lightweight at only 1.9oz, the GG&G ETI UFIR provides the end user with a MIL-STD-1913 dovetail on the lower handguard to mount a flashlight, bipod or other ancillary equipment.