I had one that I picked up used on GB. Made in India, lock marked Ketland. Sparked better than almost any other factory lock I ever had. Shot the thing maybe 20 times and then lost it in a house fire. well balanced. I liked it a lot, though I am a terrible shot with a smooth bore. I could keep them on the paper at 50 ft. I don't know who did what to tune it or anything else but it was great..