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CMMG | Banshee, Dissent, MK47, and Other CMMG AR Parts & Accessories — 550 products / 1,158 models

Whether you're a seasoned shooter or a firearm enthusiast, our selection of CMMG gun parts is designed to take your shooting experience to the next level. Elevate your build with CMMG barrels, bolts, triggers, and other precision components designed to optimize accuracy, consistency, and overall firearm performance. From CMMG BR4 rifle accessories to MK4 upper receivers, CMMG develops high-quality gun parts to suit your specific needs. image

What Does CMMG Stand For?

CMMG stands for Central Missouri Machine Guns. CMMG is an established, trustworthy brand that has released reliable and durable products for years. Overall, CMMG gun parts meet, but usually exceed, expectations for their price point. Check out all of our CMMG Reviews to see what verified customers are saying about CMMG products.

What Is the Difference Between the CMMG Banshee and Dissent?

The biggest difference between the CMMG Banshee and CMMG Dissent is that the Banshee has a buffer tube and spring like typical ARs, but the Dissent is a bufferless AR that doesn’t use a buffer tube system, providing users with enhanced stock options. Also, Banshee firearms are mostly short-barreled rifles (SBRs) and pistols and have more caliber options than the Dissent.

Buy CMMG Gun Parts & Accessories Online at OpticsPlanet

Shop online with us to save big on premium CMMG firearm parts and accessories to build or customize your weapon exactly how you want. From CMMG Banshee 9mm uppers to CMMG 22 Conversion Kits, we have great deals on fan-favorite gun parts. What’s more, OpticsPlanet has thousands of daily deals and offers Free Shipping on most orders over $49. Upgrade your firearm today for less!

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Image of Gun Parts category Gun Parts
Image of Rifle Parts category Rifle Parts
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Image of AR15 Upper Receivers category AR15 Upper Receivers
Image of Rifle Barrels category Rifle Barrels
Image of AR15 Barrels category AR15 Barrels
Image of Bolt Carrier Groups category Bolt Carrier Groups
Image of AR15 Magazine Catches & Releases category AR15 Magazine Catches & Releases
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Image of AR15 Accessories category AR15 Accessories
Image of AR 15 Tactical Rails category AR 15 Tactical Rails
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Image of AR Gas Blocks category AR Gas Blocks
Image of Muzzle Devices category Muzzle Devices
Image of Weapon Accessories category Weapon Accessories
Image of Muzzle Brakes & Compensators category Muzzle Brakes & Compensators

550 Products in CMMG

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Image of CMMG AR-15 ZEROED Gunbuilder's Lower Parts Kit CMMG AR-15 ZEROED Gunbuilder's Lower Parts Kit (20) List: $89.95 $89.29 Best Rated
Image of CMMG Banshee Upper Receiver Group 2 models CMMG Banshee Upper Receiver Group (4) As Low As (Save Up to 10%) $828.99 Free 2 Day Shipping
Image of CMMG 9mm 8in Banshee Fixed Ejector Upper Group Receiver 6 models CMMG 9mm 8in Banshee Fixed Ejector Upper Group Receiver (1) As Low As (Save Up to 11%) $819.99
Image of CMMG DISSENT 9mm, 6.5in Upper Receiver 8 models CMMG DISSENT 9mm, 6.5in Upper Receiver (1) As Low As (Save Up to 12%) $1,069.00 Free 2 Day Shipping
Image of CMMG 9mm 5in Barrel Barrel and BCG Kit CMMG 9mm 5in Barrel Barrel and BCG Kit (2) List: $449.95 (Save 10%) $405.49
Image of CMMG Mk4 6.5 Grendel Resolute Upper Group Receiver 6 models CMMG Mk4 6.5 Grendel Resolute Upper Group Receiver As Low As (Save Up to 17%) $749.99
Image of CMMG, Inc PS90 5. 10.4in. Barrel CMMG, Inc PS90 5. 10.4in. Barrel (12) List: $299.95 (Save $21.46) $278.49 Best Rated
Image of CMMG DISSENT 5.7x28mm, 6.5in Upper Receiver 8 models CMMG DISSENT 5.7x28mm, 6.5in Upper Receiver As Low As (Save Up to 17%) $1,089.00
Image of CMMG 9mm 5in Banshee Fixed Ejector Upper Group Receiver 6 models CMMG 9mm 5in Banshee Fixed Ejector Upper Group Receiver As Low As (Save Up to 10%) $829.99 Free 2 Day Shipping
Image of CMMG DISSENT Mk4, 300BLK, 10.5in Upper Receiver 8 models CMMG DISSENT Mk4, 300BLK, 10.5in Upper Receiver (1) As Low As (Save Up to 20%) $1,079.00
Image of CMMG, Inc 22LR AR Conversion Kit, Bravo, 10 Rounds 3 models CMMG, Inc 22LR AR Conversion Kit, Bravo, 10 Rounds (6) As Low As (Save Up to 17%) $183.49 Free 2 Day Shipping
Image of CMMG Dissent, Mk3, .308 Winchester, 16.1 inch Upper Receiver 8 models CMMG Dissent, Mk3, .308 Winchester, 16.1 inch Upper Receiver (1) As Low As (Save Up to 14%) $1,199.00
Image of CMMG Dissent, Mk3, .308 Winchester, 20 inch Upper Receiver 8 models CMMG Dissent, Mk3, .308 Winchester, 20 inch Upper Receiver As Low As (Save Up to 17%) $1,119.00
Image of CMMG ZEROED .750in ID Adjustable Gas Block CMMG ZEROED .750in ID Adjustable Gas Block List: $79.95 (Save 12%) $69.99
Image of CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit 2 models CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit (15) As Low As (Save Up to $44.96) $429.99
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 11%) $53.89 Best Rated
Image of CMMG Mk4 .350 Legend Resolute Upper Group Receiver 6 models CMMG Mk4 .350 Legend Resolute Upper Group Receiver As Low As (Save Up to 17%) $749.99
Image of CMMG AR-15 ZEROED Lower Parts Kit CMMG AR-15 ZEROED Lower Parts Kit (2) List: $124.95 (Save $2.16) $122.79
Image of CMMG Mk4/Ar15 Gen 2, 9mm, 33 Round Pistol Magazine CMMG Mk4/Ar15 Gen 2, 9mm, 33 Round Pistol Magazine (5) List: $50.49 (Save 26%) $37.49
Image of CMMG Resolute Upper Receiver Group 2 models CMMG Resolute Upper Receiver Group (1) List: $999.95 (Save $80.96) $918.99
Image of CMMG Dissent .45 ACP 6.5in Upper Group 8 models CMMG Dissent .45 ACP 6.5in Upper Group As Low As (Save Up to 14%) $1,079.00
Image of CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit (4) List: $134.95 $134.49
Image of CMMG 9mm 5in Banshee Upper Group Receiver 5 models CMMG 9mm 5in Banshee Upper Group Receiver (3) As Low As (Save Up to 20%) $739.99 Free 2 Day Shipping
Image of CMMG DISSENT Mk4, 300BLK, 6.5in Upper Receiver 7 models CMMG DISSENT Mk4, 300BLK, 6.5in Upper Receiver (3) As Low As (Save Up to 12%) $1,059.00
Image of CMMG Mk4 Resolute Upper Receiver Group 6 models CMMG Mk4 Resolute Upper Receiver Group (3) As Low As (Save Up to 15%) $679.99
Image of CMMG, Inc AR-15 Lower Reciever Parts Kit 2 models CMMG, Inc AR-15 Lower Reciever Parts Kit (73) As Low As (Save Up to 25%) $46.89 Best Rated
Image of CMMG DISSENT 9mm, 10.5in Upper Receiver 8 models CMMG DISSENT 9mm, 10.5in Upper Receiver (2) As Low As (Save Up to 12%) $1,089.00
Image of Cmmg, Inc AR15, Ambi Magazine Catch w/Mag Release Button and Spring 3 models Cmmg, Inc AR15, Ambi Magazine Catch w/Mag Release Button and Spring (28) As Low As (Save Up to 12%) $39.49 Best Rated
Image of CMMG 5.7X28mm 5in Banshee Upper Group Receiver 7 models CMMG 5.7X28mm 5in Banshee Upper Group Receiver (1) As Low As (Save Up to 10%) $829.99
Image of CMMG 57 X 28mm Barrel And Bcg Kit 3 models CMMG 57 X 28mm Barrel And Bcg Kit As Low As (Save Up to $44.96) $407.49
Image of CMMG, Inc Auto Sear Trip And Anti -Bounce Weight Kit, .22 ARC CMMG, Inc Auto Sear Trip And Anti -Bounce Weight Kit, .22 ARC (15) List: $81.99 (Save 16%) $68.99
Image of CMMG Mk3 Resolute Upper Receiver Group CMMG Mk3 Resolute Upper Receiver Group List: $1,099.95 (Save $80.96) $1,018.99
Image of Cmmg, Inc AR15, Ambi Magazine Catch 2 models Cmmg, Inc AR15, Ambi Magazine Catch (25) As Low As (Save Up to 22%) $39.89 Best Rated
Image of CMMG 5.7X28mm 8in Banshee Upper Group Receiver 6 models CMMG 5.7X28mm 8in Banshee Upper Group Receiver (1) As Low As (Save Up to 10%) $829.99
Image of CMMG DISSENT Mk4, 5.56x45mm NATO, 10.5in Upper Receiver 7 models CMMG DISSENT Mk4, 5.56x45mm NATO, 10.5in Upper Receiver (1) As Low As (Save Up to 12%) $1,069.00
Image of CMMG Dissent Mk4 6.5mm Grendel 16.1in Upper Group 8 models CMMG Dissent Mk4 6.5mm Grendel 16.1in Upper Group As Low As (Save Up to 12%) $1,179.00
Image of CMMG Dissent Mk47 7.62X39 12.5in Upper Group 8 models CMMG Dissent Mk47 7.62X39 12.5in Upper Group As Low As (Save Up to 11%) $1,169.00
Image of CMMG Dissent, Mk3, 8.6 Blackout, 12.5 inch Upper Receiver 8 models CMMG Dissent, Mk3, 8.6 Blackout, 12.5 inch Upper Receiver As Low As (Save Up to 11%) $1,169.00
Image of CMMG ZEROED AR15 Extended Ambi Magazine Catch 2 models CMMG ZEROED AR15 Extended Ambi Magazine Catch (3) As Low As (Save Up to 12%) $37.99 Final Sale
Image of CMMG 10mm Barrel And Bcg Kit CMMG 10mm Barrel And Bcg Kit (1) List: $474.95 (Save $44.96) $429.99
Image of CMMG Upper Group Resolute Mk4 5.56x45mm 14.5in P&W Upper Receiver CMMG Upper Group Resolute Mk4 5.56x45mm 14.5in P&W Upper Receiver List: $559.95 (Save 11%) $499.99
Image of CMMG Mk57 5.7x28mm Complete BCG Repair Kit CMMG Mk57 5.7x28mm Complete BCG Repair Kit List: $169.95 (Save 14%) $145.99
Image of CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver CMMG Upper Group Resolute Mk4 .300 AAC 14.5in P&W Upper Receiver List: $559.95 (Save 13%) $486.99
Image of CMMG Resolute Fixed Ejector 9mm 16.1in Upper Group 7 models CMMG Resolute Fixed Ejector 9mm 16.1in Upper Group List: $999.95 (Save $89.96) $909.99
Image of CMMG, Inc Ambidextrous Safety Selector Kit CMMG, Inc Ambidextrous Safety Selector Kit (31) List: $45.46 (Save $3.57) $41.89 Best Rated
Image of CMMG, Inc AR15 Lower Pins and Springs Parts Kit CMMG, Inc AR15 Lower Pins and Springs Parts Kit (14) List: $14.95 $14.89 Best Rated
Image of CMMG 99DA587 Trilug Mount Decan 9mm 1/2"-28 Nitride CMMG 99DA587 Trilug Mount Decan 9mm 1/2"-28 Nitride List: $103.99 (Save 16%) $87.49
Image of CMMG Mk3 ZEROED Gunbuilder's Lower Parts Kit CMMG Mk3 ZEROED Gunbuilder's Lower Parts Kit (10) List: $130.02 (Save 18%) $105.99 Best Rated
Image of CMMG, Inc Mil-Spec Trigger Assembly Kit CMMG, Inc Mil-Spec Trigger Assembly Kit (21) List: $54.99 (Save 13%) $47.89 Best Rated
Image of CMMG Mk4/AR15 Upper Receiver Assembly 5 models CMMG Mk4/AR15 Upper Receiver Assembly (10) As Low As (Save Up to 28%) $144.52 Best Rated
Image of CMMG EML 15 AR-15 Handguard Kit 6 models CMMG EML 15 AR-15 Handguard Kit (1) As Low As (Save Up to 17%) $185.84
Image of CMMG F Marked Front Sight Base Assembly, AR15 CMMG F Marked Front Sight Base Assembly, AR15 (9) List: $75.99 (Save 10%) $68.49
Image of CMMG, Inc .45ACP Barrel and Bolt Carrier Group Kit 2 models CMMG, Inc .45ACP Barrel and Bolt Carrier Group Kit As Low As (Save Up to $39.96) $439.99
Image of CMMG Dissent Mk4 5.56mm 16.1in Upper Group 8 models CMMG Dissent Mk4 5.56mm 16.1in Upper Group As Low As (Save Up to 11%) $1,199.00
Image of CMMG Zeroed Anti-Walk Trigger Pin CMMG Zeroed Anti-Walk Trigger Pin (5) $9.99
Image of CMMG Mk4/AR15 Gen 2, 9 mm, 10 Round Pistol Magazine CMMG Mk4/AR15 Gen 2, 9 mm, 10 Round Pistol Magazine List: $46.99 (Save 13%) $40.79
Image of CMMG, Inc 22LR AR Conversion Kit, Bravo CMMG, Inc 22LR AR Conversion Kit, Bravo (34) List: $189.95 (Save $1.46) $188.49 Best Rated
Image of CMMG ZEROED .45 ACP Linear Compensator CMMG ZEROED .45 ACP Linear Compensator (5) List: $74.95 $73.99 Best Rated
Image of CMMG Mk4/AR-15 .22 LR 25 Round Rifle Magazine CMMG Mk4/AR-15 .22 LR 25 Round Rifle Magazine (2) List: $41.39 (Save 25%) $30.99
Image of CMMG, Inc 22LR AR Conversion Kit, Echo 2 models CMMG, Inc 22LR AR Conversion Kit, Echo (18) As Low As (Save $19.96) $209.99 Best Rated
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4 Most Common AR15 Issues & How to Fix Them by Corey F.
Top 4 Optic Cuts for Pistol Slides by Corey F.
Are Pistol Red Dots Worth the Money? by Brett R.
A Guide to Pistol Triggers by Corey F.
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