Solid guard - Magpul Industries Enhanced Trigger Guard for AR15/M4, Aluminum

From a quality and function standpoint, the Enhanced Trigger Guard is what you would expect from magpul. If you wear gloves to shoot, this thing will accommodate them far better than a standard trigger guard. It does "bite" a little, as a lot of trigger guards do. Depending on what grip you use it can leave a gap right over the knuckle on your middle finger. This is easily fixed by ordering a grip with a small "ergo" tab or if you already have a grip, there are inserts made by ergo that will work.