Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how do i install? do i need a gunsmith?
Document: Brand new item. Very nice! I highly recomend this item for anyone wanting a tactical 870. You can install it yourself or have a gunsmith install it.
Thought I'd like my shotgun with these on MORE than I do. The sights are fine (I had a gunsmith buddy install them)... my issue is the Trijicon dots (the part that glows) is not all that large or bright. Enough to pick up in the dark, but just seems like they should be a little bigger. Still happy I bought them, but just not quite what I had hoped for.
I had my gun smith install these bad boys from trijicon. They work and look great.I higly recommend the sights for an 870 owner.Regards.Helmut
I had a local gunsmith attach these and he got them slightly off center. Should have done it myself.The glowing parts are very small and I'm unable to see them without my glasses. Of course I can't see much without my glasses anyway!These look sharp, are adjustable, and appear sturdy. They include a glue that supposedly will keep the sight on forever. Time will tell...
I had these sights installed by a local gunsmith on my Rem. 1100. I'm not sure if I got a decent deal but I paid $90 to have them installed. When I got them, the two pieces were in the same bag and it and they had rubbed against each other which caused some of the finish to be scratched. Another issue was the epoxy that came with it was expired, not sure if it matters but I ended up buying a high temp metal JB Weld.
This product is excellent but you need good metal working skills and a drill press if you want to do a professional job mounting the rear sight. It has no directions on how to mount it. Use extra caution when installing as the rear screw for the rear sight has to be very close to a solid block of steel in the receiver. Proper mounting and you can miss this thick block.The front requires grinding off the bead.
they work great in the pitch black!!!!!! solid metal design ensures reliability and proves it on the field. These are the best ghost ring sights ive ever used/owned they are a must buy
solid built,and the tritium glows like crazy. i would get the front sight brazed on though. the finish is a parkerized type.
With time and practice I am sure I can improve on a 12 inch group at 100 yards with these most excellent sights.Also, I will try other brands of shotgun slugs as I am yet to discover the "right" shells for the shotgun.
This makes since as you would probably have a hard time seeing the front sight (due to brightness) if they were the same size.
Answer: yes