Get an owner's manual from the maker. It may not be user adjustable. It might take a gun smith or factory trained armorer to do it.
There is a website www.rediscovered-shooting-treasures.com/mossberg that offers copies of the original factory instruction sheet for the 810 models. This is the "manual" that came with your rifle and covers a lot of information including trigger adjustment.
You will have to call Ruger to find out.
Type your answer here... how do I adjust the trigger on Remington 799
No, the Gyphon does not have an adjustable trigger
Recommend you let a gunsmith do it.
It is very easy to adjust the trigger on a Model 700 Remington. Remove the rifle from the stock and there is 3 small screws you can adjust. One is for the lbs. of trigger pull, which be careful you don't make it so easy it's a hair trigger and could go off just by the jar from closing the bolt. The other is to adjust the length of trigger pull.
Best left to a qualified gunsmith
Mine has it.
I believe this rifle was made by Mossberg and is the Mossberg 46B. Do a search for photos of the 46B Mossberg to see if it is a match. If so, try Havlin Sales & Service as they may have a replacement trigger guard.
No. Trigger guards for these were made of plastic.
Check Mossberg Customer Service thru their website. They will need the serial number of the gun in question- model changed during production.
Assuming that you have a pre- 09 Atr, the trigger is unadjustable... And you can't get a replacement from mossberg. The trigger pulls on the ATRs are horrible, ranging from 3.5(good) to 8.5(horrible) lbs. Mine breaks at 8 pounds, and there is no way of adjusting it. Believe me, I've tried, and so have gunsmiths.