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Gas block retaining pin trouble?


Str8shooter

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I used to have issues with fighting with a gas block retaining pin.  Then a long time ago I thought why not use pliers instead of trying to pound a small pin in with a punch or find a special punch to hold it slightly?  So long story short, I took electrical tape to wrap the jaws of a pair of pliers to keep it smooth and leave no marks on the gas block and left a small tag hanging off where the pin could stick to it facing the hole.   A very small bit of oil at the hole helps it slide in also.  This seriously takes all of about a 30 sec to a minute to squeeze in.  I've shown friends this trick after they tell me they have been fighting with little burrs caused by trying to force the pin in with a hammer.  They sit there with there mouths hanging open and usually laugh and call me a couple choice expletives.  

I hope this makes sense.  If not let me know.

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I assume we're talking about gas tube retaining pins.

I've had great luck with the stainless steel, coiled and chamfered roll pins I stumbled upon on eBay -- a pack of 12 sells for, like 5-6 bucks with free shipping. Bigger bags (24+) cost only slightly more.

Those pins, with a bench block designed for low-profile gas blocks (I picked up a PRI block, with punch, from DVOR for ~$10 a couple months ago) makes for short work. Good punches (roll pin holding punch, short-nose starter punch, and long-nose punch) make a world of difference, too. DVOR has a set of Grace USA punches that are of amazing quality.

Finally, using a wooden toothpick to keep the gas tube aligned is a huge help. I cut one in half, push the pointed end through until the cut end is almost flush, then cut it 1/8" or so from the block on the back side. Leaves a great "slave pin", and I can re-use what's left of that half of the toothpick.

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4 hours ago, Str8shooter said:

I used to have issues with fighting with a gas block retaining pin.  Then a long time ago I thought why not use pliers instead of trying to pound a small pin in with a punch or find a special punch to hold it slightly?  So long story short, I took electrical tape to wrap the jaws of a pair of pliers to keep it smooth and leave no marks on the gas block and left a small tag hanging off where the pin could stick to it facing the hole.   A very small bit of oil at the hole helps it slide in also.  This seriously takes all of about a 30 sec to a minute to squeeze in.  I've shown friends this trick after they tell me they have been fighting with little burrs caused by trying to force the pin in with a hammer.  They sit there with there mouths hanging open and usually laugh and call me a couple choice expletives.  

I hope this makes sense.  If not let me know.

It is fake news and never happened until you post pictures of the "alleged" So called process/tool.  That is the site rule #4.02.

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4 hours ago, Str8shooter said:

I used to have issues with fighting with a gas block retaining pin.  Then a long time ago I thought why not use pliers instead of trying to pound a small pin in with a punch or find a special punch to hold it slightly?  So long story short, I took electrical tape to wrap the jaws of a pair of pliers to keep it smooth and leave no marks on the gas block and left a small tag hanging off where the pin could stick to it facing the hole.   A very small bit of oil at the hole helps it slide in also.  This seriously takes all of about a 30 sec to a minute to squeeze in.  I've shown friends this trick after they tell me they have been fighting with little burrs caused by trying to force the pin in with a hammer.  They sit there with there mouths hanging open and usually laugh and call me a couple choice expletives.  

I hope this makes sense.  If not let me know.

See rule note on next quote.

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1 hour ago, mrmackc said:

It is fake news and never happened until you post pictures of the "alleged" So called process/tool.  That is the site rule #4.02.

Lol.  I never thought to take pictures while doing the last one but I suppose I can make a mock up for you if interested.. 

 

3 hours ago, COBrien said:

I assume we're talking about gas tube retaining pins.

I've had great luck with the stainless steel, coiled and chamfered roll pins I stumbled upon on eBay -- a pack of 12 sells for, like 5-6 bucks with free shipping. Bigger bags (24+) cost only slightly more.

Those pins, with a bench block designed for low-profile gas blocks (I picked up a PRI block, with punch, from DVOR for ~$10 a couple months ago) makes for short work. Good punches (roll pin holding punch, short-nose starter punch, and long-nose punch) make a world of difference, too. DVOR has a set of Grace USA punches that are of amazing quality.

Finally, using a wooden toothpick to keep the gas tube aligned is a huge help. I cut one in half, push the pointed end through until the cut end is almost flush, then cut it 1/8" or so from the block on the back side. Leaves a great "slave pin", and I can re-use what's left of that half of the toothpick.

Yes the gas tube retaining pin.  I didn't want to buy more punch's and jigs.  I'm cheap like that..?I do the toothpick hold also.  

I've got a poop load of electrical tape to make the pliers smooth and non-marring and always have a pliers or leatherman handy.  

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Okay since you put it that way....unless there is any member objections we will let you slide, not out  of pity,but because there is possible value in your idea. I hope you realize I am having trouble keeping a straight face. WELCOME to the best AR308 site ever!

Carry on I will be in the area until 1600 when I draw my rations of cookies and milk.

Edited by mrmackc
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3 hours ago, mrmackc said:

It is fake news and never happened until you post pictures of the "alleged" So called process/tool.  That is the site rule #4.02.

I like that, Mack - very well done!  :thumbup::hail:

Combine that one with Lesson 65B, and The Rule, and it's a work of art!   :laffs:

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1 hour ago, mrmackc said:

Okay since you put it that way....unless there is any member objections we will let you slide, not out  of pity,but because there is possible value in your idea. I hope you realize I am having trouble keeping a straight face. WELCOME to the best AR308 site ever!

Carry on I will be in the area until 1600 when I draw my rations of cookies and milk.

LOL  I can't tell if you're busting my balls or serious.  Now I'm gonna have to slap a pin in a spare gas block tommorrow.  :pics-stfu:lmao

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