Galil gas block on Valmet M76/M71???
- Thread starter AresShrike
- Start date
AresShrike
UZI Talk Life Member
Well, if the Valmet's barrel is .628, and the Galil's gas block is .634, then knurling the barrel would just allow all the gas to escape right down the little knurld valleys, though it might allow the gas block to "seem" tight. It probably wouldn't work to well.
The area on the Galil barrel that the gasblock sits on (wheter .223 or .308); is the same dimension;
.6315 .
So the i.d. of the gasblocks is .631 ; giving it a .0005 press fit.
Blackthorne's US made cast gas blocks have been know to be up to .634; which is too big to press on the barrel for proper fit. Use precision ID / OD micrometer for your checks.
.6315 .
So the i.d. of the gasblocks is .631 ; giving it a .0005 press fit.
Blackthorne's US made cast gas blocks have been know to be up to .634; which is too big to press on the barrel for proper fit. Use precision ID / OD micrometer for your checks.
AresShrike
UZI Talk Life Member
Maybe the barrel is small and the gas block is big. Then, I guess maybe the gas block can be enlarged, a little, and a sleeve could be used in between. I was kinda hoping it would just go on, with no modifications. I guess either way, it wouldn't be to hard to do. Thanks brothers, for your ideas.
AresShrike
UZI Talk Life Member
So then, as K7 said, it's not going to be to tight, it's going to be too loose. The gas block inside diameter/barrel outside diameter on the Galil is .6315" (-.634?) - larger than the Valmet gas block inside/barrel journal outside diameter which is about .628".
So there's going to be a space of about 35/1000" between the Valmet barrel, and the Galil gas block.
I wonder if you could get a sleeve that thin, or just ream the gas block a little, and go to the next size sleeve.
Another small point is that the Valmet M71 (which I was considering getting) barrel is thinner than the M76, I don't know by how much.
The M76 already has the Galil looking gas block, and it costs around twice what the somewhat "homely" M71 cost, which is why I considered all this in the first place, but considering the cost of the Valmet mags, $175+, maybe the Valmet "beater" is best forgotten. Long Live the Galil!!!!
Thanks for your help guys!
So there's going to be a space of about 35/1000" between the Valmet barrel, and the Galil gas block.
I wonder if you could get a sleeve that thin, or just ream the gas block a little, and go to the next size sleeve.
Another small point is that the Valmet M71 (which I was considering getting) barrel is thinner than the M76, I don't know by how much.
The M76 already has the Galil looking gas block, and it costs around twice what the somewhat "homely" M71 cost, which is why I considered all this in the first place, but considering the cost of the Valmet mags, $175+, maybe the Valmet "beater" is best forgotten. Long Live the Galil!!!!
Thanks for your help guys!
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AresShrike
UZI Talk Life Member
Reread original question, brother. It was about trying to put a (big) Galil gas block on (small) Valmet barrel, not the other way around.
So, with all due respect brother, yes, a sleeve would be the way to go.
Sometimes we can all get thrown off a little bit brother. I guess I wasn't clear at the start of the thread, my fault.
I gotta thank you Sniperdoc, from the bottom of my heart, for all the help you've been, not only to me, but to a great many other on this forum. You're knowledge of Galils (and a lot of other stuff) vastly eclipses mine, and that's a fact.
Thanks so much for never hesitating to come to our aid, even if we appear to be shmucks sometimes. And thanks for your service. Without selfless men like you, we wouldn't even have the Galils, or this forum for that matter.
Thank You.
So, with all due respect brother, yes, a sleeve would be the way to go.
Sometimes we can all get thrown off a little bit brother. I guess I wasn't clear at the start of the thread, my fault.
I gotta thank you Sniperdoc, from the bottom of my heart, for all the help you've been, not only to me, but to a great many other on this forum. You're knowledge of Galils (and a lot of other stuff) vastly eclipses mine, and that's a fact.
Thanks so much for never hesitating to come to our aid, even if we appear to be shmucks sometimes. And thanks for your service. Without selfless men like you, we wouldn't even have the Galils, or this forum for that matter.
Thank You.
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You might be able to use something like this;http://www.timken.com/en-us/products/seals/industrial/products/Pages/wearsleeves.aspx,or this;http://http://www.skf.com/us/products/vehicle-aftermarket/automotive/specialty-parts-and-programs/speedi-sleeve-shaft-repair-kits/index.html. If you can find one in a suitable size, it could be pressed on the barrel, then the gas port drilled,then mount the gas block.
Aries, SORRY! I got caught up looking @ OPPOSITE INFO! Yes,you can use a sleeve! Just make SURE to Drill for Gas, then line up Holes in Sleeve, Barrel, & Gas Port! You'll wanna use a High Quality Steel that will withstand the heat& cutting effects of the gases.
Re: Military Service ; I was greatly&sincerely blessed to be allowed to serve.
Re: Military Service ; I was greatly&sincerely blessed to be allowed to serve.
If it were me; I would build up the seat with material (metal spray); then turn down to correct slightly over size dimension for a .0005 press fit of the gas block.
The sleeve would only have a .003 wall thickness; which is borderline to me.
The sleeve would only have a .003 wall thickness; which is borderline to me.
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