PPQ Q4 Tac - Stuck Mount Base

1296 Views 3 Replies 3 Participants Last post by abuwf, Oct 30, 2018

abuwf

Discussion Starter · Oct 30, 2018

Hi all.

First time gun owner here, got my PPQ Q4 Tac a few weeks ago and so far everything's going great. I love the completeness of the package, lots of value in this gun - great stock trigger, suppressor-ready (no one said suppressors take 6-12 months to process

), optics-ready, and great ergo, from a company with a long and proud tradition.

Overall I'm very happy, only that I have one minor issue... I can't remove the rear sight mount base. Maybe I'm a moron or something, but I've followed the instructions in the manual https://www.waltherarms.com/wp-content/uploads/PPQ_Q4_Tac_Manual.pdf on page 36, and once I remove the two hex screws, nothing happens.

I tried lifting it up with my nails under the groove but it won't budge. I tried sliding it off left or right. When I do that, the front end moves by less than a millimeter (I can feel it move, but I can't see it move) but it seems really stuck at the back end. Should I remove the rear sight before removing the mount base? (I hope not, no idea how to zero it afterwards).

I've watched this video

(only one I could find) of a guy installing optics on the rear, and what he's doing is consistent with the manual and with what I'm doing... but his base mount just comes off like nothing, while mine's stuck.

Any ideas? Maybe use more force? I'm afraid of breaking something.

Thanks

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Balor

· #2 · Oct 30, 2018

abuwf said:
Should I remove the rear sight before removing the mount base?

No, you shouldn't! The rear sight is dovetailed into the mounting-plate and the whole sight/plate combination is removed exactly as shown in the linked video. The sight itself should be left as it is on the mounting-plate.

The only thing that I can think of that might be causing the resistance is that maybe some loctite extruded into the space between the plate and the slide when the screws were inserted at the factory. If the mounting-plate or slide-cut were out of spec, then they wouldn't have got the plate on in the first place.

Try bumping the plate with a plastic or wooden mallet.

Welcome to the Walther forum.

Balor

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imaoldfart

· #3 · Oct 30, 2018

abuwf said:
I tried lifting it up with my nails under the groove but it won't budge.

..

What size nails did you use?

What Balor said.

Call Walther......and/or take it to a gunsmith.

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abuwf

Discussion Starter · #4 · Oct 30, 2018

Thanks Balor & imaoldfart!
I whacked it with a mallet and it let go.
Afterwards the blue stuff just flaked off like nothing had happened.

Thanks

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