Blanksguy wrote:The Germans refer to these "booster-cups" as a "nozzle". Basically you have a cone-shapped "cup" under the screwed on Flash-Hider....these came with different size exit hole to the front of the booster-cup. Depending on what caliber/pressure/diamerter bullet the gun was set up for...it would require a different size/diameter exit-hole in the booster-cup.
Who has a good sheet/list of what sizes were made?...and by what countries? (IE: WWII German vs. Yugo. M53 manufactured like a German WWII MG42 vs. MG1 booster-cup exit-hole sizes) ?
ak47dennis wrote:Blamksguy, that’s a terrific overview.
I was not aware of the different barrel bearings. I would have removed it but they do not come out with the front sight & retaining finger installed.
Blanksguy wrote:Yes, MG42 Barrel-Bearings are removeable by removing the barrel....then lifting the Flash-Hider-Catch (just forward of the front-sight).....and sliding the barrel-bearing out of the receiver from/towards the rear of the gun.
To re-install the barrel-bearing is nothing more that doing the same things in reverse order.....remember to raise the Flash-Hider-Catch to allow the barrel-bearing to move fully forward.
Also....Remember during instalation that this Barrel-Bearing has a large slot cut into it that must face the right side of the gun for instalation of the barrel. ....and that the barrel-bearing has four "keys" that must match the same "key-ways" cut into the receiver.
On a side note......"Important"...it you are making up a 2-pcs Blank-Barrel for firing "Blanks".....it should have a collar at the rear to keep forward portion of the 2-pcs. Blank-Barrel from moving forward and shearing off these four keys on the barrel-bearing....OR messing up the key-ways in your receiver.
Be safe, RichardS.
42rocker wrote:My cones went from 10.3 to 11 to 11.5 to 13... The "modern" yugo m53 ones were all 13mm. I looked at about 40 cones and those were my 4 sizing groups.
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