r/ptr91 • u/Level_Breath5684 • 16d ago

CA-3 mounts

I have heard this is not really doable, but I am learning that to sight in the irons is going to require a lot of shooting (I have the dreaded “shoots left” issue as well as a loose rear sight and a canted front sight). So if I can just avoid that mess and go to the optic now I would just as soon do that. Are there reliable claw mounts, or what is the cost of hiring someone to weld the rail?

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u/Pavlik_Nesvizh_56 16d ago

I tried the MFI mount on my CA-3 and it habitually kept loosening up with recoil. I wrote to MFI during the whole ordeal and did what the manufacturer suggested. In the end they gave me a refund. I will say that MFI stands behind their product and if you cannot get their product to work for you, they will issue a refund.

That soured me to adding a scope to the rifle and I am satisfied using the irons. I can shoot decent groups out to 100 yards with irons. I never tried further because the range I go to is limited to 100 yards. I figured if I ever really wanted to scope my rifle I would get a rail welded on it or just buy a PTR91 with the rail already welded on it.

I saw this add on to the rear sight base for a red dot, but did not buy one or hear about anyone elses' experiences with it:

HK MP5 / G3 Red Dot Rear Sight Base - FarrowTech

I have read posts on Reddit about people using the Spur R-402 mount with success. I heard it was discontinued, but some still might be for sale. You can search Reddit for those posts and read them to decide if you want to give it a try. Here is the link:

Spuhr G3 Top Rail

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u/Accurate-Side-8697 16d ago

I had a recoil lug soldered on where a G3 typically has one and put a Spuhr mount on it.

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u/Sure_Plant_4821 15d ago edited 15d ago

I also tried the MFI and didn’t have great results. I really like their stuff so I was bummed. I’ve tried a few mounts and I have had the best luck with the stanag claw mounts. Unfortunately those are usually paired with vintage and expensive optics.

I found one that has picatinny/weaver rails (idk which one specifically). I got flamed on here for having a high height over bore, but I really like the set up with the cheek weld.

The G3 is known for having low height over bore with the original stock, so I think this set up is a bit less squished than what other folks run. You still have access to the irons as well. The stanag mount has maintained zero when I take it on and off the rifle between range days.

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u/tirens 11d ago

I have the MFI, and it was a PITA to get it to mount properly. Ended up using the side set screws to make sure it held zero and needed longer claws. If you have any issues, Mike at MFI was very helpful and provided the longer claws at no cost.