So, i finally pulled the trigger and purchased a surpressor. My decision to go with cmmg was based on several factors. I had purchased a banshee 9mm several years ago and love it. Also I wanted a can... See more
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Review summary
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Bought a cmmg mk4 resolute last year, figured id buy my first suppressor. First time on CMMG's website, but its super easy to navigate. I did have a minor issue with the order getting canceled 3 days... See more
Ordering was straightforward except for a muzzle brake specifically for 30 cal. so the .338 will have to do. Lead time of 15-30 days seems long, but the ATF news on Friday may have something to do wit... See more
Any questions I may have are answered with clarity and knowledge, this making me more confident about any purchase I make. Options are given for various items, This is my go-to company!!!
Company details
About CMMG
Written by the company
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 rifles
Every CMMG firearm and suppressor is 100% made in the USA from premium materials and backed by a Lifetime Quality Guarantee.
Contact info
United States
- cmmg.com
4.6
Excellent
739 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 57% of negative reviews
Typically replies within 48 hours
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Love CMMGs products
Love CMMGs products. Wouldve been nice to have tracking. Ordered on 14th and still have not received any notification from my FFL it has arrived.
14 September 2026
Reply from CMMG
Hi David,
Glad to hear you love CMMG and hope you enjoy your new purchase! If you login to your account and look at the order details there should be a tracking number under the "shipping details" heading. I did check and according to Fedex your order was delivered to the FFL this morning 9/21/26 at 11:44am.
If you didn't receive the order has shipped notification email and it's not in your junk or spam folder, please send us an email at customerservice@cmmg.com so our team can investigate the notifcations system side further.
Thank you
Quick delivery, extremely well made. But requires significant fitting in m5 lowers with the thick upper
Was easy to order. Delivery was sooner than expected.
However it did not fit my m5 lower n upper. The "wings"were too wide for the receiver. They were not angled as far out as the OE.
I fitted it using a dremel n it feels n runs great now. The metal is extremely hard n resists wear. It seems much stronger n better quality than original.
If you have a m5 lower n the thick upper, this will require significant fitting to be shaped like the one on an m16a2.
13 September 2026
Good company to deal with
Very easy to use site.order delayed by 1 day but not a big deal to me. Product appears to be of good quality,will know better once it is installed.
9 September 2026
Quick delivery
Quick delivery. I did find them cheaper afterwards but I was excited after ordering my first suppressor I didn't look anywhere else. The treads were perfect and the shims made it easy to time.
12 September 2026
Awesome company to do business with
Fast, friendly customer service and a very easy website to navigate. Shipping was quick and received my items within 7 days of ordering.
10 September 2026
Happy with customer service
Very prompt and always courteous replies. Answers all questions I have clearly. On customer service alone, I will always refer CMMG to others.
11 September 2026
Time from order being placed to order…
Time from order being placed to order being shipped was very long.
9 September 2026
Reply from CMMG
Hi Jeffrey, thank you for the feedback and for your patience. Your order was placed on 9/9 and shipped on 9/16 — about a week, which is actually well ahead of the 15–30 business day lead time listed on our product pages. We know any wait can feel long, and we're glad it's on track to arrive by today (9/18). If anything comes up with the shipment, our customer service team is happy to help.
Need more updates on arriving products
10 September 2026
Reply from CMMG
Hi Brian, thanks for the feedback. Your order shipped on 9/11, just a day after being placed on 9/10 — well ahead of the 15–30 business day lead time listed on the product page — and USPS delivered it on 9/16. We appreciate you letting us know shipping updates would help, and we'll pass that along as we look at ways to keep customers better informed along the way.
Shitty service
Shitty service. Not even a phone number to contact. Ordered a mk57 upper to replace the original mk57 upper that blew a case inside. So contacted them via email, because they dont have a damn phone number to reach out, they told me I could return it and they would check it out. But when I sent them tons of pictures of the inside of the upper they are trying to say it is the ammo. So I decided screw it I'll just order another so I dont have to deal with the BS with them. You would think being they are the manufacturer they would keep in stock, but apparently it takes 15-30 days to complete a damn order. I should have just ordered one off of buds gun shop for like 200 bucks less and it would have been here already.
16 September 2026
Unprompted review
Reply from CMMG
Hi Justin,
We're sorry to hear about the issue with your Mk57 upper and the frustration with the process so far. We understand how disappointing it is to deal with a failure on a product you're counting on, and we want to make sure this gets resolved the right way.
A few things I want to address directly:
On the ammunition determination — we understand that's a frustrating outcome, especially after taking the time to document the damage with photos. Our Lifetime Quality Guarantee doesn't cover damage tied to incompatible, hand-loaded, or reloaded ammunition, so our tech team has to review and rule that out before a defect claim can move forward.
On lead times — our upper receivers are build-to-order, and the 15-30 business day timeframe for that category is listed on the product page prior to purchase. Your new order isn't past that window yet, but we recognize that doesn't help much when you're waiting on a replacement for a part that already failed you.
On contact options — we hear this a lot, and it's fair feedback. Email is our primary support channel right now, but we'll make sure your case gets a real look. Please reach out to customerservice@cmmg.com with your order number and we'll get this escalated.
We'd like the chance to make this right.
The parts were ordered and delivered…
The parts were ordered and delivered very quickly.
7 September 2026
Don’t know where my order is
Don’t know where my order is. It was placed over a week ago and still not shipped. Also, can’t find a phone number anywhere on website to call. Please help.
8 September 2026
Reply from CMMG
Hi Rich,
Thanks for reaching out, and sorry for the frustration. Our product pages note that orders can take 15-30 business days to process before shipping. Your order was placed on 9/7, so it's currently within that window.
If you have any questions about your order status, please reach out to customerservice@cmmg.com and our team will be happy to help.
Thank you for your patience!
The quick customer service was Great!
7 September 2026
ALMOST A PERFECT EXPERIENCE.
You guys had everything I could ask for and the description was wonderful, the only thing I did not care for was there was no eta for shipping time.,And arrival to my home
14 September 2026
You all have knocked it out the park…
You all have knocked it out the park the CCMG Banshee 9mm MKG Zeroed 🔥OMG quiet, great grip, trigger balanced and just a beautiful weapon put 1000 rounds and no issues. It was worth the wait thank you for the feed back responding on IG to my questions I have no complaints super satisfied.
Looking at the 300 Black Out next but it’s a lot of competition.
13 September 2026
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