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
Government Restriction Government Restriction
You May Also Like
Best Rated TRYBE Defense 10.5 in GOVT/SOCOM Profile AR-15 Pistol Barrel, 9mm, 1/2X28 Threads, Nitride, Black, BARPIST1059MM
TRYBE Defense 10.5 in GOVT/SOCOM Profile AR-15 Pistol Barrel, 9mm, 1/2X28 Threads, Nitride, Black, BARPIST1059MM
(37)
List: $149.99 $99.99 Save Up to 33%
Blazin' Deal TRYBE Defense Pistol Slide, Glock 17, Gen 4, Viper Cut, Version 2, Black Cerakote, SLDG17G4VPRV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 4, Viper Cut, Version 2, Black Cerakote, SLDG17G4VPRV2-BN
(37)
List: $329.00 $229.99 Save Up to 30%
TRYBE Defense Pistol Slide, Glock 17, Gen 4, RMR Cut, Version 2, FDE Cerakote, SLDG17G4RMRV2-FDE
TRYBE Defense Pistol Slide, Glock 17, Gen 4, RMR Cut, Version 2, FDE Cerakote, SLDG17G4RMRV2-FDE
(37)
List: $329.00 $249.00 Save Up to 24%
Free 2 Day Shipping TRYBE Defense Pistol Slide, Glock 17, Gen 4, DeltaPoint Pro Cut, Version 2, FDE Cerakote, SLDG17G4DPV2-FDE
TRYBE Defense Pistol Slide, Glock 17, Gen 4, DeltaPoint Pro Cut, Version 2, FDE Cerakote, SLDG17G4DPV2-FDE
(37)
List: $329.00 $249.00 Save Up to 24%
Free 2 Day Shipping TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, FDE Cerakote, SLDG17G3VPRV2-FDE
TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, FDE Cerakote, SLDG17G3VPRV2-FDE
(37)
List: $329.00 $249.00 Save Up to 24%
Free 2 Day Shipping TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, Black Cerakote, SLDG17G3VPRV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 3, Viper Cut, Version 2, Black Cerakote, SLDG17G3VPRV2-BN
(37)
List: $329.00 $249.00 Save Up to 24%
Blazin' Deal TRYBE Defense Pistol Slide, Glock 17, Gen 4, Venom Cut, Version 2, Black Cerakote, SLDG17G4VNMV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 4, Venom Cut, Version 2, Black Cerakote, SLDG17G4VNMV2-BN
(37)
List: $329.00 $154.49 Save Up to 53%
TRYBE Defense Pistol Slide, Glock 17, Gen 3, DeltaPoint Pro Cut, Version 2, Black Cerakote, SLDG17G3DPV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 3, DeltaPoint Pro Cut, Version 2, Black Cerakote, SLDG17G3DPV2-BN
(37)
List: $329.00 $249.00 Save Up to 24%
Blazin' Deal TRYBE Defense Pistol Slide, Glock 17, Gen 3, Venom Cut, Version 2, Black Cerakote, SLDG17G3VNMV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 3, Venom Cut, Version 2, Black Cerakote, SLDG17G3VNMV2-BN
(37)
List: $329.00 $229.99 Save Up to 30%
Blazin' Deal TRYBE Defense Pistol Slide, Glock 17, Gen 3, RMR Cut, Version 2, Black Cerakote, SLDG17G3RMRV2-BN
TRYBE Defense Pistol Slide, Glock 17, Gen 3, RMR Cut, Version 2, Black Cerakote, SLDG17G3RMRV2-BN
(37)
List: $329.00 $229.99 Save Up to 30%
Questions & Answers
Does this bad boy work with CMMGs upper and radial delayed blow back bcg? Expert Answer

This operates with any standard AR-15 5.56/.223 lower receiver. Should work with most 9mm uppers.

by Davis N., Gear Expert, February 2, 2021
Does this have "last round bolt open"? Expert Answer

This is part of the description of this adapter direct from American Tactical, "Made from 6061-T6 Aluminum, this durable mag well adapter has a built in magazine release for your Glock mags, locks in place with your standard AR-15 magazine catch, releases the same way AR mags do and has a bolt hold open feature that locks your bolt back after the last round."

by Armando R., Gear Expert, June 20, 2019
Customer Reviews
Helpful Positive Review
The mag fit is a little tight with factory glock mags and ets mags the cheap Korean one fit a little better but works great runs very well with all ammo ive tried. But for the money and ease of installation/use its great.
2/3 found this helpful
Helpful Positive Review
It required a little adjustment to the LRBO wire but everything works now. Use a couple of needle nose pliers to torque the wire. There’s a area between too much and not enough. One way will not let the bolt close, the other will not keep it open on...
Read More...
6/6 found this helpful
Helpful Positive Review
Solid Product Bad Instructions by Riley, July 24, 2021
The guy who pointed out the adjustment is 100% correct. i was really mad at this product that i thought didnt work for 120 dollars. The big screw head you can see in the product photo is how you adjust the tension on the mag release. give it two turn...
Read More...
2/2 found this helpful
Helpful Positive Review
Just Needs a Little Adjustments by John, October 2, 2020
As the other review states I also had trouble with the mag releasing. My reason for the 4 star review is that there was absolutely no instructions in the box or on the website. Do head the recommendations on their website. First of all there is an ad...
Read More...
15/17 found this helpful
Helpful Negative Review
I bought this with the expectation to convert a normal AR lower to take 9mm glock magazines with the 9mm upper. Which is what the device is supposed to be built for. Unless I received a defective one the magazine release on the bottom of the device w...
Read More...
14/17 found this helpful
Most Recent Reviews
Adapter fit into lower receiver good but had to file mag release in lower and some on adapter to allow mags to seat fully. Still need to remove some material to get mags to drop free. Nice having the last round bolt hold open feature.
Read All 14 Reviews
Color:
Black
Gun Model:
AR-15, Glock 17
Caliber:
9mm Luger
Magazine Capacity:
10 Round
Magazine Type:
Double Stack
Condition:
New
Additional Features:
Accepts Glock style double stacked 9mm magazines
Included Accessories:
10-Round 9mm Double Stack Magazine, AR-15 Mag Well Adapter

Code: AT4-CNC-9GMA556R-ATI9MMADAPT-10RD

MPN: ATI9MMADAPT

UPC: 819644021469

List: $180.56Save $5.61
$174.95

Buy Together and Save

OP Bucks$5.10
Purchase Restrictions Purchase Restrictions

Product Info for American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock

IMPORTANT - It is recommended that you use a 9mm heavy buffer. Standard AR-15 buffers may be too light to operate the 9mm upper system without malfunction.image

New from American Tactical, the AR-15 conversion adapter that will fit any standard AR-15 556/223 lower and convert it to 9mm with no required modifications to your lower or magazines!

Made from 6061-T6 Aluminum, this durable mag well adapter has a built in magazine release for your Glock mags, locks in place with your standard AR-15 magazine catch, releases the same way AR mags do and has a bolt hold open feature that locks your bolt back after the last round.

This 9mm AR adapter accepts Glock style double stacked 9mm magazines and comes with one 10 round magazine.

IMPORTANT! - You must install a complete 9MM AR Rifle or Pistol upper receiver onto your 556/223/300blk lower receiver for this to fit and operate. Attempting to install your 9mm Adapter in a firearm without a 9mm upper receiver installed may damage the adapter or your firearm. Damage cause by imporoper use will void the Limited Lifetime Warranty. Attempting to fire 9mm ammunition through an upper receiver that is not a 9mm upper receiver may result in injury.

Plug and play and convert your lower to 9mm affordably today!

Specifications for American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock:

Manufacturer: American Tactical Imports
Color: Black
Fabric/Material: 6061-T6 Aluminum
Gun Make: Glock
Gun Model: Glock 17, AR-15
Caliber: 9mm Luger
Magazine Capacity: 10 Round
Magazine Type: Double Stack
Magazine Included: Yes
Condition: New
Additional Features: Accepts Glock style double stacked 9mm magazines
Included Accessories: 10-Round 9mm Double Stack Magazine, AR-15 Mag Well Adapter

Features of American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock:

  • IMPORTANT! - You must install a complete 9MM AR Rifle or Pistol Upper receiver onto your 556/223/300blk Lower Receiver for this to fit and operate.

Package Contents:

  • American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock

American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock Orderable Models

List of Orderable Models

  • American Tactical Imports Mag Well Adapter, AR-15, 9mm, Glock 10-Round Magazine, Black, ATI9MMADAPT , MPN: ATI9MMADAPT , UPC: 819644021469 , Code: AT4-CNC-9GMA556R-ATI9MMADAPT-10RD

American Tactical Imports AR-15 Mag Well Adapter, 9mm, Glock Unavailable & Discontinued Models

List of Unorderable Models

  • USED, American Tactical Imports Mag Well Adapter, AR-15, 9mm, Glock 10-Round Magazine, Black, ATI9MMADAPT , MPN: ATI9MMADAPT-EDEMO , Code: AT4-CNC-9GMA556R-ATI9MMADAPT-10RD-EDEMO-RE-A
  • DEMO, American Tactical Imports Mag Well Adapter, AR-15, 9mm, Glock 10-Round Magazine, Black, ATI9MMADAPT , MPN: ATI9MMADAPT-DEMO , Code: AT4-CNC-9GMA556R-ATI9MMADAPT-DEMO-10RD
Compare (0)