Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can the QR plate be reversed to be able to use it with either hand?
Document: This would be a great device. I have owned three of them and ended up having to toss all three in the trash after a few uses because of the faulty quick-release button. The button is spring-operated (like a ballpoint pen), and with even infrequent use, the spring pops out of place. Once that happens, I have never been able to properly reset the spring. With continued use, the release button eventually disintegrates and will not hold the quick-release plate in place.
), but it remains mostly sturdy. I find I'm able to sight in my shot with the hand-trigger held, then I slowly release to lock it in - no problems there. The screw mount on the tripod needs to be occasionally re-tightened which is annoying while you're working, but alleviated by adding some cheap foam to give the head something to stick to.
I bought this and a Dolica WT-1003 67-Inch Lightweight Monopod from Amazon. It's a terrific combination. Quick and easy to adjust, the Sunpak feels very solid in the hand. That may be the downside of the head though -- at about 1.5 lbs., it is really heavy. I wouldn't want to go hiking with it, but when combined with the WT-1003 you might be able to fend off a bear attack, as it would make for a club-like combo.
Well, this is a very good product. It can hold my D7000 with a Nikkor 70-300mm in place. The pistol is tight and you can turn the pistol grip to the sides so you can choose which hand you'll use to press the pistol. Very handy.
This grip has many very good points going for it, but the design of the QR plate assembly is terrible. The product is a nice, smaller mount that can be used effectively on a monopod or tripod, although I'm not sure I'll trust the mounting plate to securely hold my full frame Canon plus lens safely. The release lever doesn't have a double latch & it doesn't even completely close against the plate. It's hard to believe the mfr wouldn't alter this poor design & have an otherwise very good accessory.
I bought this head to replace a pan/tilt head that I had on my sunpak 623 carbon fiber tripod. I am concerned about the weight limit, as it's not robust enough for my 80-200 2.8 lens and body. There was give in the plate with the mount secured with a much smaller lense (28-105). Super easy to use and has a level. Solid, but has room for improvement.
I enjoy, as one of my hobbies, photography. The normal tripod heads have many adjustments that take some time to align. This head,for a very small investment is made solidly and performs just as I had wished. You grab it like a pistol, squeeze the trigger, position the camera as you wish and let go. That's all there is to it. I was surprised at how easy it was to use. It also has a quick release plate that screws onto the bottom of the camera.
Worked exactly as promised. It is a very nice addition to any mount that let's you quickly aim and lock it into place with just one hand.
I was in the process of shopping for a new tripod to replace  35 year old one that I got for nothing. The legs were having problems staying locked, but I took it apart and was able to resolve that problem...them decided to get this pistol grip head. i love it. Quality is excellent and it works well with my Canon sdslr.
When I would get my subject exactly where I wanted it, the group could not hold the camera at that angle when I released it. The camera angle would creep up because of the weight of the camera. I had set my angle to compensate for this. Fortunately, my subject (the moon) was not moving very quickly, so I was able to get it right after several attempts and still get my shot.
Answer: I think this would only be an issue if the plate had a positioning stud that sticks into a hole in the base of the camera. This plate has no such stud. The tripod screw is centered on the plate, and the plate can lock on to the grip in four different directions.