The Quick and FCDs ASF is a joint project between SOLGW and FCD. The two companies have been collaborating on a few projects, starting with the 4140 steel MLOK sling mount (MSQ-H). Ambidextrous controls allow the user to manipulate the safety with both hands with a 50 degree throw verses the traditional 90 degree operation. With the right side being the traditional length, the left side safety is shorter to not impede on normal handling of the firearm.Features :Right Hand Orientation50 Degree ThrowLong/Short orientationFits AR-15 Pattern Lower Receivers