Not my rifle, (belongs to No4Mk1) but these are the K-Var stocks. (And they look like the extended ones.) I put the plum set on my SAR1 and just ordered the black set for my SAR2. I did get the extended length, and I'm really glad I did. You'll be happy with them.
1)You will have to fit the stock a little, and when you get it in place, you need to drill the screw holes.
2)It doesn't come with screws. Order some extras in case you tear them up trying to thread them in. Go to the K-Var parts and accessories menu, and look for screws. Last time I checked they were the first item on the page.
3)Start with a small drill bit and work your way up. I found that the final drill bit diameter is 5/32". If you go smaller the screw will be very tight, and you will tear up the screw head putting it in. The screws require a standard or slotted screwdriver.
Once you get them on they look great.
4)You may also notice that your lower handguard is loose. You may have to shim it in place to keep it from moving up and down.
Sorry I don't have any pictures of mine.