It looks like you have a gas tube, which would be weird for a roller delayed weapon. Also, isn't the 1970iex a bit late for wood furniture?
I used a G3 front end; I think that's just there to house the charging handle. I like it aesthetically so I'll probably come up with a functional reason for that tube down the road.
And as far as the wood furniture, I think the Russians took until the 1990s to give the AK-74 polymer furnishings in the form of the AK-74M, so I'm okay with the first variant of the L.14 to have wood.