Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: fit on a 1077 rifle?
Document: Purchased a new rifle and I needed the mounts for my scope... These are it!! Perfect fit, and reasonably priced! !
I bought this to go on a Benjamin 392. Wrong rifle it does not fit the 392, my mistake. Only fits gun stated.
the mounts didn't fit my Crosman 1400 and I tried to modify them to fit and they just wouldn't work on this air rifle. -- probably work well on an older Sheridan or Benjamin -- J. Keller
These mounts worked flawlessly on an older Sheridan Pellet rifle. I had read the reviews but mine worked perfectly. I am not sure what i have other than it is a Sheridan. It is old, maybe 30 years old. It looks very similar to the Blue Streak.Anyway, mounts were very secure. Fit on barrel and extended far enough down to the bottom so movement side-to-side impossible.
Easy to install. Good quality. Highly recommend if mounting a red dot sight or scope on an intended pellet rifle or pistol..
When think of a mount for a rifle here it is nothing fancy but it does the job. The one thing I wish it had was a built in red dot scope or a mini fridge
Order was shipped and delivered fast, works like stated. I used this on a 1975 Sheridan 20cal air rifle and it works better than the one Crosman suggested.
The one and only mounting choice available for my pellet rifle. Works perfectly, and is extremely stable set up. Although I would think that Crosman could come up with a better mounting system.
Hope they fit my crosman 760 for short shooting good quality.
these are not very sturdy your scope will move side to side and will not be accurate they need to be made to fit properly
Answer: yes