For Sale : TracOne Tracrac is a 1 size fits all truck rack. This is constructed of high quality aluminum. This rack is perfect for when you need to carry knacks , bikes, ladders, or other long term items that just won’t fit in your truck bed. Installs easily with a no-drill single axis clamp...
When they came out with the X model , they then came out with the XL model so the X model and the Xl model can both use the 12 and 15 round mags. The XL has a little bit longer slide than the X. Then they came out with the X-macro it has the longer grip module which accommodates the 17 round mag...
Yes, you can put the XL slide on this module and turn it into basically The Sig X-Macro. So instead of using the 12 or extended 15 round mags you would have to buy the factory 17 round mags. This is what I did and is the one shown in the picture above. Pretty nice if you want to carry more...