CMMG, Inc 22LR Mk4 Upper Receiver Groups 22B8F26, 22B3035, 22B7CA4

CMMG, Inc Upper Group, Mk4LE, 22LR 22B7C51

CMMG, Inc Upper Group, Mk4 PDW, 22LR 22B8F26

CMMG, Inc Upper Group, Mk4 T, 22LR 22B7CA4

CMMG, Inc Upper Group, Mk4 HT, 22LR 22B3035

CMMG, Inc Upper Group, Mk4, A4, 22LR 22B6A72

CMMG, Inc Upper Group, Mk4LE, 22LR 22B7C51

CMMG, Inc Upper Group, Mk4 PDW, 22LR 22B8F26

CMMG, Inc Upper Group, Mk4 T, 22LR 22B7CA4

CMMG, Inc Upper Group, Mk4 HT, 22LR 22B3035

CMMG, Inc Upper Group, Mk4, A4, 22LR 22B6A72

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CMMG, Inc Upper Group, Mk4LE, 22LR 22B7C51

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CMMG, Inc Upper Group, Mk4 PDW, 22LR 22B8F26

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CMMG, Inc Upper Group, Mk4 T, 22LR 22B7CA4

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CMMG, Inc Upper Group, Mk4 HT, 22LR 22B3035

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CMMG, Inc Upper Group, Mk4, A4, 22LR 22B6A72

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Questions & Answers

What lower parts kit would I need to complete my build? Expert Answer

The CMMG, Inc 22LR Mk4 Upper Receiver Group is designed to work with any Mil-spec AR15 lower receiver and the CMMG .22 LR conversion magazines.

by Ethan, Gear Expert, August 10, 2022

Are MP 15-22 magazines compatible with this or are the mp15-22 mags proprietary only to specific mp1522 product and cant be used with other 22lr ARs? Expert Answer

This CMMG, Inc 22LR Mk4 Upper Receiver Group is compatible with CMMG .22 conversion magazines in a standard AR15 style lower receiver. It will not work with M&P-15 22 magazines.

by Ethan, Gear Expert, June 24, 2022

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Customer Reviews

Helpful Positive Review

Cmmg 22 ar15a4 Upper by nobby, July 19, 2017

Functions flawlessly. Very accurate at 100 yards practicing on NRA High power reduced targets. Great fun. Has the look and feel , but not the weight of original. No problem in cleanup that is experienced with the 22 conversions. The barrel is a ...
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4/4 found this helpful

Helpful Positive Review

Amazing 22LR Upper, but why no mag? by XenoEktika, December 25, 2017

Amazing quality 22LR Upper, but why no magazine included. Many 22 Lr AR uppers include the mag, but not this one. But this being my ony complaint, still going to give 5 stars, just sad I got to wait to shoot now. Wife got me this for Christmas

1/3 found this helpful

Helpful Positive Review

Works Great by Capn Mike, Verified Owner, May 16, 2017

The quality of this upper is top notch. Shoots great and is able to use Black dog mags, as well as S&W15-22 mags with the "better mag" adapter, making the last round bolt hold open fully functional. Its much more accurate than my 1/7 twist AR upper ...
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1/1 found this helpful

Most Recent Reviews

CMMG PDW 22lr upper by boots, Verified Owner, April 10, 2017

Just like the other cmmg 22lr upper long gun I have works perfect. This is used on my 22lr AR15 pistol build and already have 500rds thru it with no complaints. Got it on sale 485. w/free shipping. Very satisfied thank you optics planet for carry ...
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Product Discontinued by Manufacturer

CMMG, Inc 22LR Mk4 Upper Receiver Groups has been discontinued by CMMG and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

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Product Info for CMMG, Inc 22LR Mk4 Upper Receiver Groups

CMMG, Inc 22LR Mk4 Upper Receiver Group available in various modifications

For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function.

Package Contents:

CMMG, Inc 22LR Mk4 Upper Receiver Groups

Ammunition

1–40 / 40

Best Rated

Eley Ammunition Eley Ammo Target .22lr 40gr. Round Nose 50-pack

(30)

List: $20.97 (Save 57%)

$8.99

$0.18/Round

Best Rated

Eley Ammunition Eley Ammo Tenex .22lr 40gr. Eps

(15)

As Low As (Save Up to 40%)

$26.99

$0.54/Round

See all 2 models

Eley Ammunition Eley Tenex Rapid Fire Pistol 22lr 40gr Rn

(1)

List: $30.00 (Save 14%)

$25.89

$0.52/Round

On Sale

SK Semi-Auto Rifle .22 Long Rifle 40 grain Lead Round Nose Brass Cased Rimfire Ammo, 50 Rounds, 420148

(15)

List: $10.74 (Save 21%)

$8.49

$0.17/Round

Eley Ammunition Outlaw .22LR 42 Grain Lead Solid Semi Auto Benchrest Rimfire Ammo, 50 Rounds, 02320

(1)

List: $21.81 (Save 54%)

$9.99

$0.20/Round

Best Rated

Eley Ammunition Eley Ammo Club .22LR 40GR. Round Nose 50 Rounds

Eley Ammunition Match EPS .22 Long Rifle 40 Grain Flat Nose Brass Cased Rimfire Ammo, 50 Rounds, 01100

(20)

List: $39.82 (Save 45%)

$21.99

$0.44/Round

Eley Ammunition Eley Ultra Extreme Long Range 22lr 40gr Rn 50rd, 02600

(1)

List: $30.00 (Save 13%)

$25.99

$0.52/Round

Best Rated

Eley Ammunition Eley Ammo Precision .22LR 40GR. Semi-auto Benchrest 50 Rounds

Eley Ammunition Eley Ammo Contact Subsonic .22lr 42gr. Round Nose 50-pack

(4)

List: $12.00 (Save 25%)

$8.99

$0.18/Round

Eley Ammunition Eley Ammo Team .22lr 40gr. Eps

(1)

List: $35.74 (Save 51%)

$17.49

$0.35/Round

Eley Ammunition Eley Ammo Tenex Pistol .22lr 40gr. Round Nose 50-pack

List: $42.49 (Save 31%)

$29.49

$0.59/Round

Best Rated

Remington 22 Thunderbolt .22 Long Rifle 40 Grain Round Nose Brass Rimfire Ammunition

(11)

As Low As (Save Up to 58%)

CCI Ammunition Blazer .22 Long Rifle 40 Grain Lead Round Nose Rimfire Ammunition

(29)

As Low As (Save Up to 58%)

$4.99

$0.10/Round

See all 2 models

Fiocchi .22LR 0 Grain Brass Blank Ammo, 200 Rounds, 22LRBL

List: $45.99 (Save 10%)

$41.49

$0.21/Round

Remington 22 Yellow Jacket .22 Long Rifle 33 Grain Truncated Cone Hollow Point Brass Rimfire Ammunition

(1)

As Low As (Save Up to 53%)

$6.99

$0.13 - $0.14/Round

See all 2 models

SUPERNOVA .22 Long Rifle 40 Grain Lead Round Nose Green and Red Tracer Rifle Ammo, 12 Rounds, PMSN22LR-MP

List: $14.28 (Save 20%)

$11.49

$0.96/Round

Aguila Ammunition .22 Long Rifle Super Max, 30 Grain, Brass Cased, Centerfire Rimfire Ammunition

(1)

As Low As (Save Up to 52%)

Aguila Ammunition Super Colibri 22LR 590fps. 20 Grain Lead Round Nose, Brass Case, Ammo, 50 Rounds, 1B220339

(7)

List: $13.99 (Save 43%)

$7.99

$0.16/Round

Winchester M-22 .22 Long Rifle 40 Grain Copper Plated Lead Round Nose Rimfire Ammunition

(6)

As Low As (Save Up to 30%)

$94.99

$0.09 - $0.11/Round

See all 2 models

CCI Ammunition Clean-22 Blue .22 Long Rifle 40 Grain Lead Round Nose Rimfire Ammunition

(3)

As Low As (Save Up to 11%)

$12.99

$0.12 - $0.13/Round

See all 2 models

Aguila Ammunition .22 Long Rifle 20grain Standard Velocity Solid Point Brass Cased Pistol Ammo, 20 Rounds, 1B222600

List: $14.62 (Save 25%)

$10.99

$0.55/Round

Best Rated

Remington 22 Golden Bullet .22 Long Rifle 36 Grain Plated Hollow Point Brass Rimfire Ammunition

(8)

As Low As (Save Up to 11%)

$11.99

$0.09 - $0.12/Round

See all 4 models

Rws Blanks.22-6mm Rimfire Noise Only Blanks 100-pack

List: $19.99 (Save $1.00)

$18.99

$0.19/Round

Best Rated

Federal Premium BYOB .22 Long Rifle 36 Grain Copper Plated Hollow Point Rimfire Ammunition

Winchester Super Suppressed .22 Long Rifle 45 Grain Subsonic Lead Round Nose Rimfire Ammunition

(5)

As Low As (Save Up to 48%)

$16.99

$0.12 - $0.17/Round

See all 2 models

Remington Golden Hunter 22LR 40 Grain Plated Hollow Point Rimfire Ammunition

(1)

As Low As (Save Up to 12%)

$11.49

$0.10 - $0.11/Round

See all 2 models

D.t. Systems .22 Blanks Light Powerloads For Dt Launcher 100

List: $27.99 (Save 39%)

$16.99

$0.17/Round

Best Rated

Winchester .22 Long Rifle 36 grain Copper Plated Hollow Point Rimfire Ammunition

(5)

As Low As (Save Up to 49%)

CCI Ammunition Blazer Rimfire .22 Long Rifle 38 Grain Lead Round Nose Rimfire Ammunition

Remington 22 Viper .22 Long Rifle 36 Grain Truncated Cone Solid Bullet Brass Rimfire Ammunition

(3)

As Low As (Save Up to $3.00)

Lapua Pistol King, .22 Long Rifle, 40 grain, Lead Round Nose, Brass, Rimfire Ammo, 50 Rounds, 420164

(6)

List: $22.54 (Save 14%)

$19.49

$0.39/Round

Best Rated

CCI Ammunition Stinger .22LR 32 Grain Hollow Point Copper Rimfire Ammunition

(27)

As Low As (Save Up to $2.00)

$9.99

$0.20/Round

See all 2 models

Federal Champion .22 Long Rifle 36 Grain Lead Hollow Point Rimfire Ammunition

As Low As (Save Up to $4.50)

Federal Premium Champion Training - Rimfire .22 Long Rifle 40 Grain Lead Round Nose Rimfire Ammunition

(8)

As Low As (Save Up to 55%)

SK Pistol Match, .22 Long Rifle, 40 grain, Lead Round Nose, Brass, Rimfire Ammo, 50 Rounds, 420114

(15)

List: $12.54 (Save 12%)

$10.99

$0.22/Round

Best Rated

Aguila Ammunition Colibri .22LR 420fps. 20 Grain Lead Round Nose, Brass Case, Ammo, 50 Rounds, 1B220337

(16)

List: $13.19 (Save 39%)

$7.99

$0.16/Round

Best Rated

SK Rifle Match .22 Long Rifle 40 grain Lead Round Nose Brass Cased Rimfire Ammo, 50 Rounds, 420108

(42)

List: $14.85 (Save 13%)

$12.99

$0.26/Round

Best Rated

CCI Ammunition Standard Velocity .22LR 40 Grain Lead Round Nose Rimfire Ammo, 50 Rounds, 35

(41)

List: $11.99 (Save 58%)

$4.99

$0.10/Round

CCI Ammunition Shotshell Pest Control .22LR 31 Grain Shotshell Rimfire Ammo, 20 Rounds, 39

Ammo Boxes

1–7 / 7

MTM Ammo Box .22lr 100-rounds, Clear Blue, P-100-22-24

MTM Ammo Wallet .22 Caliber 30 Cartridge Smoke

(6)

List: $9.64

$9.49

Tiger Rock 22 Ammo Box, 22BOX

$10.00

Berrys 835 Ammo Box 22 LR 1rd Blue Lid W/Black Bottom

(1)

List: $3.39 (Save 27%)

$2.49

Berrys 63600 Ammo Box 22 LR 100rd Clear/Black

(3)

List: $3.99 (Save 38%)

$2.49

MTM 200 Round 22 Long Rifle Ammo Box, SB20032

(1)

List: $29.99 (Save $2.50)

$27.49

MTM 200 Round 22 Long Rifle Ammo Box, SB20020

(1)

List: $29.99 (Save 12%)

$26.49

Image of CMMG Mk4 Resolute Upper Receiver Group

4 models CMMG Mk4 Resolute Upper Receiver Group (4) As Low As (Save Up to 18%) $776.99

Image of CMMG ZEROED AR15 Ambi Mag Catch and Button Kit

CMMG ZEROED AR15 Ambi Mag Catch and Button Kit (14) List: $60.32 (Save $3.83) $56.49 12% Coupon

Image of CMMG AR-15 ZEROED Gunbuilder's Lower Parts Kit

CMMG AR-15 ZEROED Gunbuilder's Lower Parts Kit (20) List: $89.95 (Save $3.16) $86.79 Best Rated

Image of CMMG, Inc 22LR AR Conversion Kit, Bravo, 10 Rounds

2 models CMMG, Inc 22LR AR Conversion Kit, Bravo, 10 Rounds (7) As Low As (Save Up to 21%) $189.49 12% Coupon

Image of CMMG DISSENT Mk4, 300BLK, 6.5in Upper Receiver

4 models CMMG DISSENT Mk4, 300BLK, 6.5in Upper Receiver (3) As Low As (Save Up to 16%) $1,179.00

Image of CMMG AR-15 ZEROED Lower Parts Kit

CMMG AR-15 ZEROED Lower Parts Kit (5) List: $124.95 (Save $8.46) $116.49 Best Rated

Image of CMMG 9mm 5in Banshee Fixed Ejector Upper Group Receiver

4 models CMMG 9mm 5in Banshee Fixed Ejector Upper Group Receiver As Low As (Save Up to 15%) $829.99

Image of CMMG 9mm 8in Banshee Fixed Ejector Upper Group Receiver

4 models CMMG 9mm 8in Banshee Fixed Ejector Upper Group Receiver (1) As Low As (Save Up to 15%) $826.99

CMMG, Inc 22LR Mk4 Upper Receiver Groups Unavailable & Discontinued Models

List of Unorderable Models

CMMG, Inc Upper Group, MK4LE, 22LR, 22B7C51 , MPN: 22B7C51 , UPC: 852005002998 , Code: 2CM-UFH-22LRUPPR-22B7C51
CMMG, Inc Upper Group, Mk4 PDW, 22LR 22B8F26 , MPN: 22B8F26 , UPC: 815835016054 , Code: 2CM-UFH-22LRUPPR-22B8F26
CMMG, Inc Upper Group, Mk4 T, 22LR 22B7CA4 , MPN: 22B7CA4 , UPC: 815835016030 , Code: 2CM-UFH-22LRUPPR-22B7CA4
CMMG, Inc Upper Group, Mk4 HT, 22LR 22B3035 , MPN: 22B3035 , UPC: 815835016047 , Code: 2CM-UFH-22LRUPPR-22B3035
CMMG, Inc Upper Group, Mk4, A4, 22LR 22B6A72 , MPN: 22B6A72 , UPC: 815835016771 , Code: 2CM-UFH-22LRUPPR-22B6A72

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CMMG, Inc 22LR Mk4 Upper Receiver Groups

Product Discontinued by Manufacturer

Product Info for CMMG, Inc 22LR Mk4 Upper Receiver Groups

Package Contents:

Ammunition

Ammo Boxes

Related Products to CMMG, Inc 22LR Mk4 Upper Receiver Groups

CMMG, Inc 22LR Mk4 Upper Receiver Groups Unavailable & Discontinued Models

List of Unorderable Models