From: $384.00
Compatible with the Glock 17/19/19x/20/21/22/23/25/31/32/45. Can be used with a huge array of slide mounted optics. No longer is the MCK slide and serration dependent! Utilizing the NEW GEN 3 Charging Handle, you can use any aftermarket slides, sights or optics inside the MCK. The MCK 3.0 Comes With A Free Titan Charging Handle (Except for 20/21) (Also sold separately!)
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The MCK Gen 3 will take America and the world by storm, and even though the MCK Gen 1, and 2 become the most popular conversion kit in the world. We truly believe the Gen 3 will out do them both. Come join the MCK Family and be one of the first to own the revolution MCK Gen 3.
When designing the MCKGEN3 we at CAA USA tried to take into account all of the comments we have received from you our loyal customers. This valuable input was essential when designing the MCKGEN3. Our new “CAR-WASH” cleaning system, with a radically changed charging handle and the ability to give our customers the option to use their Micro Red Dot slide mounted optic while inserted into the MCKGEN3, will bring the MCK to even greater heights than the Gen 1 or Gen 2. We truly believe the MCKGEN3 will take America and the world by storm as did the Gen 1 and Gen 2. Reaffirming that the MCK is the most popular Conversion Kit ever made. We are extremely proud that the MCKGEN3 as well as the rest of the MCK family is made 100% in the USA.
A new front adapter shields the inside of the MCK from carbon buildup and is easily removed and washed. Making cleaning easier than ever before. Simply remove, rinse, and get back to it.
4.6-inch Aluminum rear and front top picatinny rails to accommodate any optic or sighting preference.
The stabilizer features an external brush for cleaning the slide as well as a holder for the Gen 3 charging handle.
Ships with a new Gen 3 charging handle that utilizes a backplate for handguns with RMR/slide mounted optics, as well as a standard polymer Gen 2 handle for use when not using a slide mounted red dot.
The Gen 3 features all the Gen 2 advantages, including an aluminum top rail. Spare magazine holder with release button. Suppressor capable (increased to fit 1.56-inch diameter) and ability to fire with the stabilizer/stock folded.
Compatible with the Glock 17/19/19x/20/21/22/23/25/31/32/45.


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The Gen 3 Stabilizer Brace is constructed of durable polymer with a Velcro arm strap. The brace can be folded. Non NFA item.

The Gen 3 Stock is constructed of durable polymer and TPE rubber. The stock is to be shouldered similar to a rifle stock. Note: Installing a stock converts a pistol into a Short-Barreled Rifle (SBR), requiring ATF/NFA compliance.

The GEN3 Short Stabilizer Brace is constructed of durable polymer with a Velcro arm strap that can be folded left or right. The compact size makes it easier to transport the MCK and to maneuver in close quarters—without converting your handgun into an SBR.

The TAC Kit transforms your Micro Conversion Kit Gen 3 into a compact setup with a One-Point Sling (Push Button Swivel) and thumb rests, inspired by HK MP5K dynamics. Full arm extension plus bungee resistance creates a steady platform for better accuracy and control. Includes a forearm strap for single-handed support without converting your handgun into an SBR.
What's The Difference Between a Stabilizer vs. Short Stabilizer vs. Stock vs. TAC?:
Find out if your pistol is compatible out of the box or if it requires an upgrade kit.
Select your gun's manufacturer and exact model above to verify setup compatibility.
Lightning fast shipping
This company is all around outstanding. From the customer support to the product and accessories. I had questions before I ordered my MCK gen 3 for my Glock 23 Gen 4. Jay Flemings not only answered my questions the next day every time, before I ordered the product, and after I had some questions and he was super helpful. They need to give that guy a raise! Most company’s barely respond if they do at all. But yea I highly recommend this MCK to anyone that wants to turn your regular carry pistol into a decked out carbine with endless amounts of attachments/accessories. I couldn’t be happier with mine, it comes with everything you need it’s very simple process putting it together. 10/10 product and customer service!
Great service and great products. Won’t go anywhere else for a similar product.
First off, I want to thank you for making such a superior product. I like this third version of your product so much that I may buy another one for Glock I don’t even own yet!! Keep up the great work over there, I have already told my friends the benefits of you products especially the great prices and free shipping!! You all have made a customer for life and I look forward to purchasing from you again!!
I am really impressed with this purchase. Everything fits perfectly. Ordered another one.