ZEV Technologies Slide Lock Charging Handle is machined from a single piece of 7075-T6 billet aluminum with a black hardcoat anodize finish for greater strength and durability. The handle also has a black nitride steel capture latch and is textured for superior grip and ergonomics. This model is designed exclusively for use with ZEV billet upper receivers. It is not recommended for use with forged upper receivers. It does not require a latch to be pulled to release charging handle.