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10/30/2025 5:29:51 PM EDT
I have a 1938 Mossberg .22 rifle, the rear sight is missing some parts and is basically useless.  A Picatinny rail on top of the receiver or barrel would solve my problems.  Where could I source the rail?  Could I do it myself?

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Do epic shit.
10/31/2025 7:08:52 PM EDT
[Last Edit: JKinAZ][Edited] [#1]
A rail for a Ruger Mk2/3/4 might work, if the receiver diameter is approx the same.
I put one on my Mk2, which involved drilling and tapping because it's an old model with no existing holes. Fairly easy if you have a drill press and a way to get a centerline marked on top of the receiver.

ETA: My Mk2 receiver measures .996" diameter. Don't remember where I got the pic rail but it's 3.077 long, if any of that helps.
10/31/2025 7:18:08 PM EDT
[#2]
I think the only thing you are missing is a little screw to dial the elevation. Why not try and google up a replacement sight?
10/31/2025 9:16:38 PM EDT
[#3]
Quote History
Originally Posted By bpm990d:
I think the only thing you are missing is a little screw to dial the elevation. Why not try and google up a replacement sight?
View Quote


All the rear sights I’ve found are missing the same elevation dial.
Do epic shit.
10/31/2025 9:24:05 PM EDT
[#4]
I ended up going with this.  
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Do epic shit.
10/31/2025 9:40:30 PM EDT
[#5]
Try Numerich's Gun Parts. They probably have the screw. If they don't, you might be out of luck.
10/31/2025 10:54:07 PM EDT
[#6]
Quote History
Originally Posted By Redman556:
Try Numerich's Gun Parts. They probably have the screw. If they don't, you might be out of luck.
View Quote


I’ll check them out.  I ended up getting my sight from https://www.havlinsales.com/.
Little mom and pop shop that just deals with old Mossbergs.
Do epic shit.
1/2/2026 9:56:15 PM EDT
[#7]
That rear peep sight didn’t work out as I couldn’t find a matching front sight.  
I had a rail off my Ruger MK IV tactical laying around and found it fit perfectly.  I glued it on the receiver with JB weld and installed a Romeo 5.  I just certified it for war.

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Do epic shit.
1/3/2026 5:51:16 PM EDT
[#8]
Nice.  That even looks good.
1/3/2026 6:48:51 PM EDT
[Last Edit: Migmaqman][Edited] [#9]
horrible to do that to that old mossberg ,is that a model 26 varient?

the line between Gunsmithing and Bubba seem to be very blurry here , JB welding Picrail to a scarce nearly 100 year old vintage rifle should not be applauded , you can walk into any gunshop or pawn and trip over a Model 60 for $125 that are very accurate reliable rifles and do what ever to , who ever left you that did not want that to happen
1/10/2026 1:41:44 PM EDT
[#10]
The modification is technically reversible with a heat gun.
1/10/2026 1:48:11 PM EDT
[#11]
Quote History
Originally Posted By Moondog:
The modification is technically reversible with a heat gun.
View Quote


That is correct.  Gun can easily be returned to stock.  I love this setup so far.
Do epic shit.
1/13/2026 3:13:57 AM EDT
[Last Edit: Migmaqman][Edited] [#12]
it was/is a clown move , its as simple as that , whats next , JB weld  Pic rail on a Kentucky Long rifle? why not ad a KAC foregrip to that .22 , why stop there , lag bolt a tactical flashlight to the stock , sooooo many other firearms you could get stupid with and just draw a chuckle ,some people should stick with AR's for Barbi dress up

hope you have somewhere to shoot it other than a range , folks are going to look at you like you are wearing your under ware on the outside of your pants
8/6/2026 6:22:46 PM EDT
[#13]
Quote History
Originally Posted By Migmaqman:
it was/is a clown move , its as simple as that , whats next , JB weld  Pic rail on a Kentucky Long rifle? why not ad a KAC foregrip to that .22 , why stop there , lag bolt a tactical flashlight to the stock , sooooo many other firearms you could get stupid with and just draw a chuckle ,some people should stick with AR's for Barbi dress up

hope you have somewhere to shoot it other than a range , folks are going to look at you like you are wearing your under ware on the outside of your pants
View Quote


I bet you're a blast at parties.

OP, life is short. Do what makes you happy.

Check out my *GASP* Remington 514 from 1948 with a rail and a red dot. I also chopped it from 26in to 20, threaded it, and suppressed it.

PEARL CLUTCHING: ENGAGE

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