CMMG is an American firearms manufacturer founded in 2002 in Fayette, Missouri, specializing in AR-15 and AR-10 rifles, pistols, and components. CMMG is widely recognized as one of the leading AR-15 manufacturers in the United States, known for combining innovation, reliability, and affordability across a broad range of platforms and calibers.CMMG holds the patent on the Radial Delayed Blowback™ (RDB) operating system, a proprietary design that significantly reduces felt recoil and enables the AR platform to reliably cycle pistol calibers including 9mm, 10mm, .45 ACP, .40 S&W, and 5.7x28mm — making CMMG a top choice for pistol-caliber carbine (PCC) enthusiasts.Product Lineup BANSHEE — Compact AR pistols and SBRs available in 18 calibers RESOLUTE — Versatile 16" rifles for home defense and range use ENDEAVOR — Long-range precision AR-10 platforms DISSENT — Buffer-free AR pistols and rifles featuring patented Compact Action technology ZEROED Suppressors — An affordable suppressor line compatible with AR-15s and most long riflesEvery CMMG firearm and suppressor is 100% made in the USA from premium materials and backed by a Lifetime Quality Guarantee.
CMMG (cmmg.com) has 630 customer reviews on Five Star Index, with an average rating of 4.5 out of 5.
Also known as
cmmg.com
Website
cmmg.com
Category
Manufacturing
Listed on Five Star Index
2026
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The company replied to 5% of reviews.
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Most recent review: October 2026.
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Have to say , Customer Service was amazing for me.
I bought the conversion kit for the 22LR. Problems with it straight away - failure to fire and jamming consistently. Not happy.
Started emailing Tad at Customer Service. He recommended their charging handle and also sent out new spring and connector. Called me to help install. I'd rather the product had just WORKED, but I cannot fault the Customer Service in any way at all.
TO
Tony
I am still waiting for you to get an…bad
I am still waiting for you to get an email or a call back or something I have bought banshees three of them at 10 or 40 and a 45 I got rid of the 10 mm I bought a 40 and I still have problems with it you put the screw on brass deflector and it's tearing up the metal on me gun shoots good and everything but your service is terrible and it and trying to get a hold of you or trying to find an email to send stuff is ridiculous with you you got to straighten it out because I like banshees but I'm going to tell you I'm going to start looking other places for pistol calipers because I read too many bad reviews on you and I think if I read reviews and maybe I wouldn't have bought Banshees to have all these problems with them if you can't come up with a good product or at least help fix mine I'll go somewhere else
DS
D S.
Cheap materials at mil spec prices
Cheap materials, high prices.This company cuts corners on virtually every part of the gun. The barrel is 4140 steel instead of 4150. The upper receiver is made if cheap, softer 6061 aluminum instead of 6075 and it is not hard anodized! Do not buy from this company. They use cheap materials and charge the same as a quality mil spec riffle. Also terrible fit and finish.the bcg bolt tail had significant wear and tear new out of the box, including deep pitting.
Please do your homework these people take advantage of customer ignorance and profit from it.
AT
a T.
good n bad Banshee
Purchased a new Banshee in 9mm. Gun shoots great really accurate. Have shot around 300 rounds so far with no malfunctions. The black Cerakote finish, not so good! It is not very tough, flaking in the upper where the bolt rides. Any minor hit takes off the paint. Have emailed the company with my complaint, so far, no response.
MA
Matt
Terrible customer service
Going to echo everyone else on this one -customer service is horrible and they don't seem to care about the customer experience whatsoever. You will be lucky to even get a response from them. Can't see this company staying in business this way.
SH
Steven H.
Banshee Mk4 9mm Ejector Spring and Pin defective
Banshee Mk4 9mm. Expensive useless firearm that will not eject or recycle bolt every 3rd round. Know issues with ejector pin and spring see the many postings ! Apparently CMMG has not upgraded the flawed Ejector Pins and weak springs to create this catastrophic failure right out ofthe box ! CMMG 2022- continues to sell a firearm that is a no-go when you open the box and bring to the range for the first time. I should have done more research before waiting 35 days for a useless firearm that required to be pre-paid before they ship it. Did I say useless- that also goes for the TECH-SUPPORT TEAM which can only be reached by email. No one answers the phone ! They are quick to blame the Mag's which they brand and insert the 9mm followers in a 5.56 Magpul. I have a $1795.00 firearm that is as relaible as a broken broken watch. Should have continued to buy SIG's. I would not have this problem !
WO
William O.
Ordered a .22 conversion full upper kit…
Ordered a .22 conversion full upper kit thru my LGS and paid for it. That was July 10 2021. The store owner has since ordered a similar unit from Bear Creek because he could not get a decent response from his CMMG rep. Been waiting about 2 months for the Bear Creek order. Store owner has not gotten a refund f the CMMG REP, nor have I. Just wish someone would buy out the owners so CMMG products would actually be made. Update. Happy with the Bear Creek upper, which showed up about a week after I first posted. Fit perfectlyBill
WB
Will B.
Good product/Terrible customer service
Their products are top notch. If the review was just for their products, it would be a 5 star. However, their customer service/business practices would be a 0 star. If you are willing to wait for 6 months (or in my case, 10 months) and don’t mind handing over $1000s of dollars AND not have anyone respond for weeks to your inquiries, you’ll be happy. They do not answer their phones and take at least 10 days to respond to an email, if they decide to reply. The worst part was I originally placed the order, I knew there was going to be a wait. I was ok with that, but expected that, if I had a question, it would be answered. Nope, apparently this was an unrealistic expectation. Then, after 6 months of a wait, CMMG told me that I had to cancel my order and put in a new order. I still don’t know why this was the case. I tried to find a similar product, but it was difficult as their website is a mess. Instead of the 4 items I ordered, on the second order I was only able to order 3 items and, even after a “10% discount code” the price was over $200 more. In short, I got less products and had to pay more money. I sent multiple emails, tried to call, etc to get clarification, but no luck. I did not have any other company that I could order the parts from, so I was stuck. Great equipment, but do not expect any communication. Is it worth it? That will be up to you. I am extremely doubtful that I will be a return customer. 10 months was too long in my opinion.