I have a 6.5 Grendel build I just put together and got the scope set up on. It's mounted in a cantilever mount on the very last notch on the upper receiver. I have an A2 stock on the gun currently, and while prone I have to put my head all the way on the back of the stock in order to get enough eye relief. Are there any stocks out there that are longer than the A2? I know Magpul has their PRS that is another 1/2-1" longer, but $255 is a tough number to swallow right now. If anyone knows of a stock a bit long then the A2 let me know. Thanks