I bought this grenade launcher for my vfc scar-l and the aesthetic effect is amazing. The launcher makes the gun look extremely high tech and awesome. I can load almost any 40mm grenade in the breach although the longer ones have a tendency to stick to the back of the launcher when removing. The mount does add a few pounds onto the gun. The attachment of the trigger mounts is relatively difficult to do since you need to keep your finger on the launch button while inserting the trigger assembly over the launch button so it may catch your finger a little. All in all though this is a great attachment to have for your SCAR.
Easy to load
Adapts long grenades
Does not require trigger assembly to fire
Safety button is tough to switch
Grenades stick to back during unloading