My neighbor gave me his Lincoln model 1400 grease gun. I haven't used it yet. He said it wastes alot of grease. He purchased a new Makita to match the rest of his equipment. Hope I like it and don't need to buy something else.
I should have mentioned that my HF grease gun is 21 years old. Have no idea what the new units are like as far as quality.
The lock n lube is nice, but it does nothing that a new standard Lincoln unit can do. The coupler that fastens on the zerk fitting wears out and leaks grease or gets dirty and doesn't seal correctly.