FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Questions & Answers
Wouldn't the g 21 sf without the pic rail work in the standard mck for the g 21? I guess my question is what makes this model special for the g 21 sf? Expert Answer

This CAA Glock MCK - Advanced Micro Conversion Kit is compatible with Glock 20 / 21 / 21 SF (models that have Universal Glock Rail). This kit is specific to those models because they are slightly wider than 9mm and .40S&W caliber Glocks.

by Ethan, Gear Expert, February 24, 2023
It is a gen 3 21 sf with a picatinny rail, I know that they are kind of uncommon, its not the standard glock rail, just want to make sure it will fit Expert Answer

I would recommend reaching out to CAA directly as they do not specify compatibility with that specific model. Their contact information can be found linked below:
https://caagearup.com/pages/contactus/

by Ethan, Gear Expert, October 11, 2022
Customer Reviews
Helpful Positive Review Feels like an idea mahout gave up on by wes, Verified Owner, April 22, 2021
I think I came into the MCK with high hopes. I watched the reviews and saw the feedback, all was positive. The few flaws pointed out I did see ahead of time proved to be minor other then one. It is extremely hard to get a Glock 20 Gen 4 into this. Ho...
Read More...
4/4 found this helpful
Most Recent Reviews OK Concept but .... by Rob, May 1, 2023
This seemed like a good idea but I wouldn't trust it to work if you need it. I had a lot of problems with the bolt locking to the rear when there was still rounds in the magazine. It is hard to get the pistol in and out of the carrier. The laser a...
Read More...
0/2 found this helpful
Read All 2 Reviews
Color: Black Gun Type: Pistol Gun Make: Glock Gun Model: Glock 20 , Glock 21 Included Accessories: 500 Lumens Light , Front & Rear Sights , Long Stabilizer , One Point Sling , Sling Mount , Thumb Rest

Code: XA-CVC-MCKGLK21ADV-MCK21A

MPN: MCK21A

UPC: 814716013403

Product No Longer Available

Product Info for CAA Glock MCK - Advanced Micro Conversion Kit - Gen 4 - 20/ 21/21SF

No pistol disassembly required, the CAA Glock MCK - Advanced Micro Conversion Kit - Gen 4 - 20/ 21/ 21SF is designed to be the ultimate way to enhance your handgun. A polymer and aluminum platform, this Handgun Conversion Kit from the experts at CAA, is designed to be a lightweight and sturdy platform for Glock handguns, turning it into the ultimate Micro Conversion Kit. The CAA Glock Micro Conversion Kit features a top Picatinny rail, that allows a combination of sights and/or optics. Also allows for easy mounting of various other accessories to the right and left side rails. The CAA Gen 4 Micro Conversion Kit allows for multiple handgun models into one platform, making it incredibly versatile. Some of the many features of the CAA Glock MCK - Advanced Micro Conversion Kit include right-folding stock/arm brace for easy concealment and carry, and a built-in charging handle and built-in securing system.image

Features of CAA Glock MCK - Advanced Micro Conversion Kit:

  • No pistol disassembly required - Just place pistol into the kit, lock, and go
  • Allows for multiple handgun models into one platform
  • Ergonomic Finger Groove Grip for more stability
  • Top Picatinny rail, allowing a combination of sights and/or optics
  • Side Picatinny rails for mounting additional accessories, i.e.. thumb-rests
  • Ambidextrous, fast and easy handling
  • Right-folding stock/arm brace for easy concealment and carry, locks in folded position
  • Front spare magazine holder for a faster reload
  • Built in charging handle allowing for quicker assembly / disassembly
  • Exposed slide release for direct contact and easier use

Package Contents:

Gun Parts and Accessories

1–29 / 29
Previous
Next

Firearm Case

1–18 / 18
Previous
Next

Gun Slides and Accessories

1–18 / 18
Previous
Next

Magazine and Accessories

1–26 / 26
Previous
Next

Gun Barrels

1–14 / 14
Previous
Next

Gun Sights

1–28 / 28
Previous
Next

Holsters

1–32 / 32
Previous
Next

Related Products to CAA Glock MCK - Advanced Micro Conversion Kit - Gen 4 - 20/ 21/21SF

CAA Glock MCK - Advanced Micro Conversion Kit - Gen 4 - 20/ 21/21SF Unavailable & Discontinued Models

List of Unorderable Models

CAA Glock MCK - Advanced Micro Conversion Kit, Glock 20/21, Front & Rear Sights, Thumb Rest, 500 Lumens Light, One Point Sling, Sling Mount, Black, Long Stabilizer, MCK21A , MPN: MCK21A , UPC: 814716013403 , Code: XA-CVC-MCKGLK21ADV-MCK21A
CAA Glock MCK - Advanced Micro Conversion Kit, Glock 20/21, Front & Rear Sights, Thumb Rest, 500 Lumens Light, One Point Sling, Sling Mount, Tan, FDE, Long Stabilizer, MCK21TA , MPN: MCK21TA , UPC: 814716013427 , Code: XA-CVC-MCKGLK21ADV-MCK21TA
CAA Glock MCK - Advanced Micro Conversion Kit, Glock 20/21, Front & Rear Sights, Thumb Rest, 500 Lumens Light, One Point Sling, Sling Mount, Tungsten Gray, Long Stabilizer, MCK21TUA , MPN: MCK21TUA , UPC: 814716014028 , Code: XA-CVC-MCKGLK21ADV-MCK21TUA
CAA Glock MCK - Advanced Micro Conversion Kit, Glock 20/21, Front & Rear Sights, Thumb Rest, 500 Lumens Light, One Point Sling, Sling Mount, OD Green, Long Stabilizer, MCK21GA , MPN: MCK21GA , UPC: 814716013410 , Code: XA-CVC-MCKGLK21ADV-MCK21GA
CAA Glock MCK - Advanced Micro Conversion Kit, Glock 20/21, Front & Rear Sights, Thumb Rest, 500 Lumens Light, One Point Sling, Sling Mount, White, Long Stabilizer, MCK21WA , MPN: MCK21WA , UPC: 814716013663 , Code: XA-CVC-MCKGLK21ADV-MCK21WA
Compare (0)