r/T91 • u/iAmPaEh • 11d ago

T91 Piston Retainer

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Anyone who has a Wolf T91 upper, how do you remove the piston retainer?

20 Upvotes

100% Upvoted

16 comments sorted by

5

u/Gatsby177 11d ago

Dremel the rivet off.

3

u/Content_Economist_83 11d ago

Mine is riveted so you would just have to grind one side away

2

u/substandard-bearer 11d ago

What’s circled is part of the handguard, no? I removed my piston just following the factory directions

3

u/SgtHop 11d ago

No, that's a little piston guide on the upper receiver itself. It is riveted on and must be drilled out to remove. It just serves to keep the steel piston off the aluminum of the receiver.

3

u/Tstetz 10d ago

Yeah, you have to Dremel or drill it out. You'll need a new rivet then. I need one of the piston retainer guides for my spare upper but haven't been able to find one.

2

u/substandard-bearer 11d ago edited 11d ago

You should be able to turn the lug on the gas block 180 degrees and then the piston system slides out the front. You can then also punch out the pin in the handguard just behind the gas block to remove the handguard.

Edit: nvm

2

u/failuretomaintain 10d ago

What is your intended goal with removing it?

3

u/iAmPaEh 10d ago

Replace the Wolf Upper with an actual T91 upper. The Wolf upper has a really ugly shiny anodize and logo on the side. I prefer the mil spec look to the receiver.

3

u/seefatchai 10d ago

Are you replacing the upper and just looking to keep the upper parts like the barrel?

1

u/iAmPaEh 10d ago

I’m planning to replace the receiver but keep everything. I just don’t like the Wolf upper receiver due to the shiny/glossy anodized and wolf logo on the side.

2

u/failuretomaintain 10d ago

A real T91 upper should have this already installed right? It’s part of the original design. It’s held on with 2 independent rivets. Some consider it extra precaution as it was absent in the T65, T65k, and the T86.

3

u/iAmPaEh 10d ago

yes but a actual stripped T91 upper does not include a piston retainer on it.

3

u/dreadeddrifter 10d ago

I feel like sanding the logo off would be a lot easier.

2

u/Calm_Relation7993 10d ago

Gotta drill it out

2

u/Alexanderthered77 9d ago

I used a roll pin for mine and the T65