Has anyone created an after market or tried to install a Binary trigger on their XCR?

Like the looks of their clear mags (and they are only running like $14 right now).....but want to add WeaponTech BHO followers (hate the click you get from an empty AK and prefer to know it's empty by feeling it lock back)... Can't get an answer from WT to find out if they will fit in Magpul...

My new XCR-L SBR is stuck in jail right now at my local NFA dealer. Fortunately, they have an indoor range, so I was able to put some rounds through it. The ammunition I used is Tula 122gr FMJ. This ammunition has a copper jacket instead of the usual copper/steel jacket found in most 7.62x39...

Second run is done and I only have 5 of these left to sell, then we're out. 6061-T6 Aluminum hard coat anodized black, fits both the -L and the -M. Priced at: Update! Arrogant bastard sale! In honor of a post today on the last page, we're gonna blow these out and manufacture another run...

What are the over all lengths with a 7.5" barrel folded, brace unfolded and brace unfolded extended?