SKSs are heavy enough without adding the bayonet.
That's the first thing I took off mine before adding a polymer stock. I don't even know what I did with 'em. My rifle, I cut the bayonet lug off. All it was good for is grabbing brush as I walked and causing a racket. I always carry the gun upside down on my off shoulder with the sling and the bottom faces forward. I can whip it up almost as quick from that position as I can from port arms. But, I'd walk along and that bayonet lug would grab brush and rattle it.
I also installed a 5 round mag on that gun, not because of any restrictive laws, but it makes carrying the gun with one hand easier. The mag sticks out right at the balance point of the rifle, always seems the case, and with a flush magazine, it's a lot easier to tote. As I mostly use the gun as a knock about truck gun, ease of carry is important to me.
Another mod on both my guns is an ambidextrous safety since I shoot left handed. I got more in aftermarket on these things than the guns cost me. That rifle cost me 75 bucks and the stock alone was 75.
But, at least IMHO, the gun is a far better field gun with the mods. Besides, the camo on the stock is cool lookin'.
Since this pic, I have removed the scope and the case deflector and made a truck gun out of it. I also pulled the slip on recoil pad off. I only had it on there to give me eye relief on the scope. Not the greatest hunting set up anyway and I have that scope on my new CVA Wolf now, making much better use of it.