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Anyone have a Buffer Pilot Fail and Separate?

Buffer pilot

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11 replies to this topic

#1 Grease Gunner

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Posted 01 August 2020 - 11:13 AM

Hello All:

Was going to put a WH1928 thru a test run and when it stopped after 20 rounds, The pilot was sticking out

the back of the receiver an extra inch. Separated upper and lower and the metal disc part had separated from the 

pilot. I have WW2 pilots and will replace. The spring got so kinked up its unusable.

The disturbing thought is : could the pilot have kept on going thru the back and leave the gun?

 

I will post pics of the failed pilot later


Edited by Grease Gunner, 01 August 2020 - 11:14 AM.

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#2 StrangeRanger

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Posted 01 August 2020 - 11:44 AM

Common and dangerous failure with the crappy 2-oiece WH buffer pilot

Replace with a GI pilot (which is 1-piece) and the problem is solved forever

 

And yes it could take out an eye


Edited by StrangeRanger, 01 August 2020 - 11:46 AM.

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#3 Gio

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Posted 01 August 2020 - 12:31 PM

First thing one needs to do with a WH gun is replace all internals with WWII Their have been many post on this subject. Elementary Watson!!!!

Frank
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#4 Frank Iannamico

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Posted 01 August 2020 - 01:21 PM

Yes, the failure of WH 2-piece buffer pilot is common and dangerous.

 

Read Tom Davis' SAR article on WH Thompson parts.

 

https://www.smallarm...?idarticles=224


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#5 ppgcowboy

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Posted 01 August 2020 - 01:24 PM

Pictures?
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#6 Grease Gunner

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Posted 01 August 2020 - 01:24 PM

i did notice the internals have the S on name for savage but i didnt look at the buffer pilot

Thanks!


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#7 StrangeRanger

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Posted 01 August 2020 - 01:43 PM

Make sure your actuator is a machined GI part.  The cast WH actuators are prone to a wide variety of failures and are best used as paper weights


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#8 Grease Gunner

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Posted 01 August 2020 - 04:45 PM

will look at actuator- Thanks

 

Here is the pics of the failed buffer pilot

 

looks like whatever they did to adhere the disc part obviously didnt hold

 

xjmBfn.jpg
b3tBLN.jpg
23e2Wa.jpg

Edited by Grease Gunner, 01 August 2020 - 04:46 PM.

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#9 john

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Posted 01 August 2020 - 06:52 PM

Looks like it was brazed. Bad way to do something like that under stress.
Welding would have been far better, but turning from one steel piece is definitely the way to go.
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#10 APEXgunparts

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Posted 01 August 2020 - 11:47 PM

I guess this is why the pilot guide for the recoil spring is a steady seller!
Fortunately we started off with a lot of that USGI machined part on hand from the material we purchased from OOW.
More of them were in the Omega Weapons purchase.

Richard


Edited by APEXgunparts, 01 August 2020 - 11:48 PM.

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#11 full auto 45

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Posted 03 August 2020 - 10:35 AM

Typical WH crap. Mine did this the first time I went to the shoot at Tracie's. Put in a Savage buffer pilot and it works perfect. 


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#12 john

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Posted 03 August 2020 - 03:00 PM

Incidentally, that buffer pilot rod is not coming out under spring tension as the spring rides the outside of the rod. That spring pushes on the disc that was brazed onto the rod, so once the brass broke free the tension on the rod was lost.
If it is made too long, the actuator might push it out a tad but probably vibrated out
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