+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
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.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit

Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
1 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
2 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
3 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
4 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
5 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
6 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
7 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
8 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4
9 of 9 images
Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4

Tap Tap to Zoom

Questions & Answers
Will this work on a P80 pf45 frame Expert Answer

I would recommend contacting the manufacture.
Advantage Arms 208-667-2121.

by Ben, Gear Expert, September 23, 2021
See 1 More Answer
Will this work on a Glock 20 Gen 3 frame? Expert Answer

No, due to design, it is only for the gen 4 series.

by Ben, Gear Expert, September 23, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
wow what a fun training tool by drillerdan, February 3, 2020
Have ran many different rounds through this and most have been flawless. CCI has been the best performer, have some oldWinchester 525 round counts pre Obama age that are the worst with 1 out of 30 not hitting the firing pin hard enough. So much fun ...
Read More...
1/1 found this helpful
Read 1 Review

Code: 3FE-CNC-RS9-AAC20-21G4-DEMO-10RD

MPN: AAC20-21G4-DEMO

Product No Longer Available

Product Info for Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit

Advantage Arms Conversion Kit, 22LR, 4.49" Barrel, Fits 20/21 Gen 4, With Cleaning Kit, Black Finish, 10Rd, 1-10Rd Magazine AAC20-21G4image

Package Contents:

  • Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit

Related Products to Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit

Image of Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag List: $339.99 (Save 15%) $289.99
Image of Advantage Arms Glock 19/23 Gen 5 .22 LR Conversion Kit W/Two 10-Round Magazine and Range Bag Advantage Arms Glock 19/23 Gen 5 .22 LR Conversion Kit W/Two 10-Round Magazine and Range Bag (3) List: $379.99 (Save 21%) $299.99
Image of Advantage Arms Glock 26/27 .22 LR Conversion Kit w/10-Round Magazine and Range Bag Advantage Arms Glock 26/27 .22 LR Conversion Kit w/10-Round Magazine and Range Bag (11) List: $285.00 (Save $7.51) $277.49 Best Rated
Image of Advantage Arms Glock 19/23 .22 LR Conversion Kit w/10-Round Magazine and Range Bag Advantage Arms Glock 19/23 .22 LR Conversion Kit w/10-Round Magazine and Range Bag (12) List: $285.00 (Save $7.51) $277.49 Best Rated
Image of Advantage Arms Glock 17/22 .22 LR Threaded Conversion Barrel w/Adapter Advantage Arms Glock 17/22 .22 LR Threaded Conversion Barrel w/Adapter List: $156.00 (Save $11.51) $144.49
Image of Advantage Arms Glock 19-23 MOD-CA Conversion Caliber 2 models Advantage Arms Glock 19-23 MOD-CA Conversion Caliber (28) As Low As (Save Up to 15%) $249.99 Best Rated
Image of Advantage Arms Glock 17/22 Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag Advantage Arms Glock 17/22 Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag (2) List: $340.25 (Save 13%) $294.49
Image of The Triggered Company Partisan Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Single Side Safety Selector 4 models The Triggered Company Partisan Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Single Side Safety Selector (446) As Low As (Save Up to $24.99) $275.00 Free 2 Day Shipping
Image of The Triggered Company The Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Ambidextrous Safety Selector 2 models The Triggered Company The Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Ambidextrous Safety Selector (40) List: $324.99 (Save $25.00) $299.99 Free 2 Day Shipping
Image of Kaw Valley Precision Heavy H3 Stainless Steel Buffer Kaw Valley Precision Heavy H3 Stainless Steel Buffer (43) List: $49.95 (Save 20%) $39.95
Image of Atrius Development Forced Reset Selector 7 models Atrius Development Forced Reset Selector (141) As Low As (Save Up to 16%) $189.99 Blazin' Deal
Image of Geissele Super 42 Braided Wire Buffer Spring And Buffer Combo, H2 made-in-usa-flag 2 models Geissele Super 42 Braided Wire Buffer Spring And Buffer Combo, H2 (235) As Low As (Save Up to 30%) $114.00 Best Rated
Image of TRYBE Defense Standard Handguard Barrel Nut TRYBE Defense Standard Handguard Barrel Nut (30) List: $18.99 (Save 98%) $0.44 Blazin' Deal
Image of Radian Weapons Glock 43X 9mm RAMJET Barrel w/ AFTERBURNER Compensator 5 models Radian Weapons Glock 43X 9mm RAMJET Barrel w/ AFTERBURNER Compensator (41) As Low As (Save Up to 18%) $389.95 Best Rated
Image of AS Designs Arc-Fire V2 Non-Ambi Kit AS Designs Arc-Fire V2 Non-Ambi Kit (15) $199.99 Best Rated
Image of DFCO Kung Fu Grip Plug DFCO Kung Fu Grip Plug (25) List: $12.00 $11.99 Best Rated
Image of Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle made-in-usa-flag 4 models Breek Arms AR-15 Warhammer Mod2 Ambidextrous Charging Handle (575) List: $54.95 (Save $5.00) $49.95 Best Rated
Image of DFCO Kung Fu Grip, Black 13 models DFCO Kung Fu Grip, Black (142) As Low As (Save Up to 15%) $19.99 Best Rated
Image of Radian Weapons Glock 43X/48 Anchor and Pistol Magwell 3 models Radian Weapons Glock 43X/48 Anchor and Pistol Magwell (55) As Low As (Save Up to 36%) $109.95 Best Rated
Image of Strike Industries Polymer FSA Picatinny Folding Stabilizing Brace Strike Industries Polymer FSA Picatinny Folding Stabilizing Brace (16) List: $99.95 (Save 10%) $89.95 Best Rated
Image of Superlative Arms Adjustable Bleed Off Gas Block 16 models Superlative Arms Adjustable Bleed Off Gas Block (307) List: $99.99 (Save 10%) $89.99 Up to 13% Coupon
Image of Heresy Design Silencer Timing Device made-in-usa-flag 2 models Heresy Design Silencer Timing Device (12) As Low As (Save Up to 10%) $8.95 Best Rated
Image of Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer 2 models Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer (63) As Low As (Save Up to 11%) $99.95 Best Rated
Image of Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific (28) List: $269.00 Add to Cart for Your
Special Price Blazin' Deal

Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4 , MPN: AAC20-21G4-DEMO , Code: 3FE-CNC-RS9-AAC20-21G4-DEMO-10RD
  • Advantage Arms Glock 20/21 Gen 4 .22 LR Conversion Kit w/10-Round Magazine and Cleaning Kit, 4.49 inch Barrel, Black, AAC20-21G4 , MPN: AAC20-21G4 , UPC: 094308000145 , Code: 3FE-CNC-RS9-AAC20-21G4-10RD
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-09-14 UTC.