Difficult
I like that this product locks tight. Unfortunately it's too tight. It doesn't want to slide much and will pinch a finger too. Unlike bumpfire stocks the handle sticks onto the slide box making it difficult to use even with white lightning grease. This upsets me. Lucky for me I understand how it works and will be fileing it soon after my custom paint job on them. No I don't paint the slide box. I will get this to work better.