Biff
Great Stock
This is probably the best stock you can buy for the MP5. It’s just as comfortable as the A2, but folds up. It also cost less than half what an A3 cost and is much lighter.
I have this, the HK A2 fixed stock and the HK A3 3 position. If I could only have one it would be the B&T folder. Get all three if you can, but start with this one.