What's the overall length of the rifle in the picture?
Are they made with different length barrels?
I tried google but couldn't tell for sure from what I read.
The original standard barrel was a 21", with a sleek flash hider that was probably 4 inches long. 60-70 countries adopted them, so there were many variations. Lately DS Arms has been the main civilian producer here in the US. They have a bunch of different models. With a short flash hider on the standard rifle they give the OAL as 44".