The 7.62x39 model has 14x1 LH threads, the .223/5.56 model has 1/2x28 threads, and
the .308 model has 5/8x24.
This link will have all your specifications on length depending on what caliber you are working with: https://primaryweapons.com/store/product/flash-suppressing-compensator/
I would recommend reaching out to the manufacturer directly for another copy of installation instructions. You can reach them by using the following link:
https://www.primaryweapons.com/contactus/
This compensator does not include a crush washer. Please email us at TechSales@OpticsPlanet.com so that we can provide you with some compatible options.
No, it does not.
Yes, though it will require drilling a small hole into the compensator.
Yes, this device has to be timed but, the logo is supposed to be at the 12 o'clock position.
It will depend on the thread pitch of your barrel. Most 6.8 SPC barrels are threaded in 5/8x24 so item 3G2FSC58A2 will fit if this applies to your barrel as well.