Gen III Delta forearms are constructed of light weight high strength carbon fiber, aluminum and steel for the best possible combination of weight and strength. The carbon fiber also reduces the amount of heat transferred to the shooter during high rate of fire.
The Delta forearm comes with 4 rails, a 8.5" rail on top and 3 3" rails at 3,6, and 9 Oclock positions. The top rail is not level with the receiver. The top rail is 1.328" from bore center.
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