I saw this on Gunbroker

YOU ARE BIDDING ON "THE ULTIMATE SURVIVAL TOOL!" THIS ITEM DOES NOT REQUIRE A FFL, TURN YOUR GLOCK 22 INTO A FIREBREATING MACHINE.
THIS IS BRAND NEW IN THE BOX WITH FULL FACORY WARRANTY.
Finally, something truly new and exciting in the firearms market! Mech Tech is proud to present its innovative product line of Carbine Conversion Units.
The Mech Tech Carbine Conversion Unit (CCU) is a handgun accessory - technically not a firearm. The purpose of the CCU is to simply convert an autoloading pistol to a slick shooting shoulder stocked semi-auto carbine.

The Benefits: Greater range, accuracy, and up to 24% higher bullet velocity with the very same off the shelf ammo you now use in your pistol, and the
CCU will easily handle +P ammo. All of this makes our CCU - "THE ULTIMATE SURVIVAL TOOL!"


The conversion process is simple, requiring no gunsmithing or tools!
The pistol's frame slides neatly into the Carbine Conversion Unit. The pistol's disassembly mechanism is used to lock the frame securely to the CCU
body. The CCU functions as a straight blowback system and features a 16 1/4 inch barrel and standard Weaver style sight base. The assembled carbine uses the pistol's magazine and ammunition making it the most versatile handgun accessory!

Can not be done in NJ. I was looking into the same conversion kit for my Neos.

why not?

It looks real nifty... but also quite a bit expensive.

You can not convert a hand gun to a long gun in NJ. The long gun would have to have its own sieral number and it does not.

So what about those Buckmark extensions? I guess it borderlines modifying a firearm, vs adding something on.

most of those are sold as buckmark rifles:



I don't believe you can convert a regular buckmark....

That is incorrect. Federal law says that you can convert a handgun to a rifle but not a rifle to handgun without a Form 1/$200 tax stamp. There is no NJ law prohibiting you from converting a pistol to a rifle.

Will consider one of those mech tech units if I get a full frame glock.

Youtube review of one of these Mech Tech units on a 1911:

http://www.youtube.com/watch?v=nfvx8zw9hZ4

pistol-calibre carbines are 'truly new'?