SGL20 Stock Change Need Some Tips
So i decided to change the stocks on my SGL20 and i'm having some major issues, mostly in the area of the new stocks not fitting. i expected things to be tight but not this tight, if you have any tips or suggestions i would greatly appreciate them. for reference the new stock set i want to put on is the the plum stocks from k-var unless i'm missing something they should be the same thing.
try just sanding a little off the new stock at a time until it fits perfect. thats what I would do
Cool, i'll try that tomorrow. Any advice on how to get the upper handgaurd off/on?
To get the upper handguard off you have to remove the bolt carrier and flip up the lever on the rear sight block then just lift the handguard and gas tube up. To get the handguard off the gas tube you have to twist the handguard 180 degrees in the gas tube and pull it out. Hope this helps
the lower handguard needs the top two corners of the metal "U" beveled to 45 degrees. Depending on trunion location, the plastic outer points of the "W" on the back need to be shaved - I just cut off the tips, not much, about .020". Then align and smack the metal front (without the retainer on) with a plastic mallet. Tight is good. On the stock, you will have to move the step rearward about .4mm. The stock was copied from the wood one, which deliberately left a .4mm gap to prevent the edges of the stock from becoming recoil surfaces. When you drill the holes, drill them 1/3 of the way between the center and the back edge of the hole. This draws the stock forward when the screws are tightened. if the holes are forward of center, they push the stock away from the receiver when tightened.
The upper handguard usually has enough flex for no adjustment, but on Romy gas tubes, I often have to bevel the upper outer edges. While I have a fancy tool for R&R the handguard, I find clamping the vertical flats of the back end in a vice using the palm of my hand works faster and on wood handguars, downwad preddure while turning reduces cracking.