Ok, So I admit, Calling this thing a pistol is a little ridiculous. However the ATF has ruled that you can use a Sig brace, you can shoulder it, and use it similar to a rifle stock. This is pushing it to the absolute legal limit, but its 100% legal and good to go. So what makes this thing so freakin long? A combination of parts. I used the Law Tactical folder which adds 1.375" to LOP. I used a +3 KNK pistol tube and then a Odinworks locking collar. The upper is a BMC 11.5"/carbine gas system with the 10" KMR and a Noveske pig. So Length of pull in the picture? 16" which makes a perfect sight picture. For reference LOP on a fixed A2 stock is about 14" Of course the LOP is totally adjustable too, You just slide the Odinworks lock ring in to where you want and set the stop to suit you. Im taking it out to shoot for the first time with the folder tomorrow. I'll report back on my findings.