r/canadaguns • u/starw24-ps4 • May 01 '26

Fix my gun SKS Undergassing Fixes?

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I have received an sks that has a barrel which has been cut and crowned down to 18.6”. The owner told me it has been short cycling, which from my research says could be due to either the gas system being loose or more likely due to the dwell time in the barrel now being shorter.

I am going to bring this gun to the range with a bunch of spare parts for a day to start troubleshooting it, and see if I can get it to work. My current fix steps are below, am I missing anything? Do you guys have any tips to help this cycle? 18.6 Sks pictured with a cherrywood stock for attention.

  1. Try it as normal, if it doesn’t work then -

  2. Swap gas tube to second one

  3. Tape front end of gas tube in case of gas loss

  4. Swap long gas pistons

  5. Swap short gas piston and spring

  6. Swap recoil spring

  7. Swap bolt and carrier

  8. Try a detachable mag and new ammo?

Worst case if it still doesn’t run, I may look into either getting a lighter recoil spring or cutting down an extra one to see if that lightens the bolt. Thanks!

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37

u/siming_z May 01 '26

Can I just admire how rad the poster is?? OP where did you get this stuff and do they have a Toronto variant?

24

u/starw24-ps4 May 01 '26

Thank you sir! Takes a bit of work but you can get this too. This is a Calibre magazine issue cover that the artist posted online for free.

You need to find a good image (Search up Justin Baird Calibre magazine and pick the best quality one you find), then upscale that to a poster size using a website / AI / whatever, and then you can have that ordered and printed using Walmart / Amazon printing services in whatever size you want. Good luck!

37

u/CalibreMag May 01 '26

I should really post the high res version somehow.

It was the best cover we've ever had. Love it, and love seeing it on display like that!

1

u/TescoValueSoup May 05 '26

You said on X you might offer it for sale as a print. Would be really interested in one, I’m sure countless others would too

2

u/CalibreMag May 09 '26

I know it's a late reply - but I'm working on it.