Change Performance Center M&P10 MOE Rifle Stock to Collapsible Stock

[aklim69]

Wife has THIS. Problem is the stock is fixed and a bit longer than what she wants. So, can someone tell me how to change it to an adjustable stock? I don't believe it is as simple as buying the adjustable stock from Magpul. I believe you have to change the recoil tube and the stock spring. Please advise. TIA