Fixing canted gas block
Just looking for some advise on fixing
A canted gas block ony rifle.
I will be installing an ultimak and
I would like to have it line up with the
Any pitfalls I should be aware of?
It depends on how canted and if you can remove the pins and reinstall and renotch the ones you already have... On one barrel I had to renoch and also reinstall a slightly larger pins in the front site to get it to line up straight so I really cant use this site or barrel on any other gun unless I use the whole barrel assembly..If you can post Pics and mabey some one can give you a heads up on what to try next..On this same gun since I had to move the site alittle foward I had to weld the front break to the site since I didnt like how loose it felt with just the spring pin in place and I disturbed the threading when I had to move the site alittle foward.....
The "usual" is to drive out the pins, get the barrel in a well supported setup with hardwood blocks, then use a large rubber, or better still, dead blow hammer to tap the block over.
Then re-drill the grooves in the barrel and install slightly larger pins.
If you get the barrel in a good setup, the gas block will almost always move.
The "watch outs":
Some people will recommend using heat. This means to warm the block and the barrel, but NOT red hot or even hot enough to be hotter than firing a fast magazine. People hear "warm the part" and take a blow torch and heat it up until it's glowing a dull red.
When re-drilling the grooves in the barrel, the idea is to cut new grooves, not enlarge the holes in the gas block.
People tend to loose sight of the intent.
The big caution is to make sure the hole in the gas block doesn't get too misaligned with the gas port into the barrel.
Get the holes misaligned enough, and the rifle will fail to operate due to insufficient gas into the gas block.
Some people have reported success using tapered pins, rather than redrilling the holes and notches and installing larger pins.
I suppose whether that works depends on how far the block needs to be moved to square it up.