ZCI 10in Aluminum RIS Foregrip
[M-06]

This rail is a superb value. The fit and finish are both good. These rails are wider than more fashionable keymod rails, which may be a concern for some users. At $28, though, these are a great deal. They installed very easily on an AGM M4 I built for a customer.

An earlier reviewer mention the extended rail portion does not line up with the flat top receiver; this is not true. There is a single large hex adjusting screw located opposite the extended rail section. Loosening it allows the installer to move the rails independently of the barrel nut, which in turn allows the installer to align the extended rail segment with the receiver. The nut has slots cut into it to prevent the rails from rotating once tightened (read: no lining up screw holes!). There are plenty of holes for a gas tube to pass through the nut, as well.