Ok,need a bit of help...

[Krull]

I like the Night Guard revolvers,the lock not so much,I find I'm preferring my Stainless 686 much more so I'm turning mine into a "kind of" Night Guard

Now,next is the sights,all I use is 158gr ammo so I want to go ahead and put the fixed rear sight on it-thing is will this fit my 686-3?

C&S Extreme Duty Fixed Rear Sight with Dots for S&W Adj Sight Revolver K-L-N Frames

Knowing before I buy would be whole lot less frustrating then guessing!

[Aussie44]

I would go for this one..It is adjustable for elevation only,And fits old and new style.

S&W Rear

Ken