Mech Tech Systems presents a novel Upper - the

Carbine Conversion Unit

A revolutionary accessory that will change the way you see your pistol!

What exactly is the CCU system? It is an 'upper' for an autoloading pistol. Shown below is a photo of an M4 Fixed Stock CCU. You can choose from 4 different butt stocks, change the type of rail system and add accessories. When you're done looking at this page, go to the menu at the top of this and click on the type of pistol you'd like to convert. The CCU is not a firearm and requires no special licensing to purchase. Under federal law (BATFE) it is perfecty legal to install a pistol lower and then remove the lower and reassemble the pistol. (see forum and FAQ pages for details) The unit comes completely assembled and test fired.

All CCU's have a 16" barrel. The CCU is NOT a firearm and needs no special licensing to purchase! What do you need? You need a Glock, 1911 or XD/XD(M) pistol. What do you need to do? Field strip your pistol. This will separate the slide assembly from the frame or 'lower'. Shown below is a Glock with the slide removed.

Now you slide the CCU onto the frame and you get what you see below:

At this point you have your pistol with a 16+" barrel upper. The unit is ready to fire! Slip in a loaded magazine, rack the cocking handle to the rear and release it - this loads a round into the chamber in the same way as does the original pistol slide. The unit operates in semi-auto mode exactly as does the pistol with the original 'top end' in place except that the CCU does NOT lock open after the last round. No modifications to the pistol 'lower' are necessary, in most states. No unusual wear occurs when using the CCU. The assembly is totally reversible. Mech Tech has a whole family of accessories to customize it for your needs. Accessories which attach to the rails - eg: sights, lights etc. - are a 'no brainer' to install and this will be left to the customer. Please see our ACCESSORIES page to see what we have available plus you can use some of what you may already own.