When i ordered the stock i dint know what to expect but after getting it im convinced on tapcos products. the stock fits PERFECTLY to the a-5 back and they include a O ring,
also its 6 position adjustable so you can get that perfect length. I really do recommend this stock because of its price and quality.
I wont give it a 10 because it does wobble slightly, but not where it connects to the gun just the adjuster. It IS VERY STABLE, and as for sights and mounts--you need a raised sight, but thats already known to anyone that owns a a-5. if you want to AIM get the stock, also if you just want the a-5 to look awesome then get a stock, if you just a shoot and pray don't bother.