What's needed to install UBR on LMT CQB?

Re: What's needed to install UBR on LMT CQB?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Magstang1</div><div class="ubbcode-body">A wrench for the castle nut. </div></div>

Make sure it's a good one too, you'll also need a way to securely hold the lower without damaging it. LMT stakes their castle nuts very well and they can be a PITA to get off.