CMMG‘s Resolute 300 Series carbine in .40 S&W is a joy to shoot with plenty of energy for practical work. Law enforcement asked for a .40 S&W carbine that used the same magazine as their Glocks. CMMG answered the call and tamed the recoil with Radial Delayed Blowback.
The key to this gun is the innovative Radial Delayed Blowback (RDB). The RDB system delays and reduces the velocity of the bolt so that powerful pistol cartridges like .40 S&W can be used without a heavy buffer system. Felt recoil is also reduced.
The 300 Series is the full-featured, top-of-the-line offering. The Resolute starts with matched forged 7075-T6 AL M4 type upper and lower receivers. The CMMG RML15 M-Lok handguard provides modularity for any attachments.
Performance features include a CMMG SV brake, oversized ambidextrous charging handle, a Magpul MOE pistol grip, the CMMG RipStock with a six position enhanced receiver extension, a Geissele Automatics SSA 2-Stage trigger and a CMMG ambi safety selector.
With the 300 Series, you also get your choice of 10 different Cerakote colors, which are applied to the receiver, handguard, ejection port cover, and the RipStock. The model above is Bazooka Green.
I got to try the .40 S&W Resolute with the RipStock and a 16-inch barrel. This package soaks up the .40 recoil and puts out 10mm levels of energy. It was a fast and easy shooter.
The Nikon SPUR 3MOA red dot sight is like cheating. It is a simple point-and-click interface. Put the dot of doom on the target and pull the slick Geissele Automatics SSA 2-Stage trigger. Out to 100 yards on a 6-inch plate with a center hold, no hold offs needed. Shooting steel at 10 yards was a joy. The Texas Star has met its match.
There are many magazine options available for the Resolute. Glock factory magazines ran well, but all my KCI USA magazines were equally accepted. The drum may be silly on a handgun, but the weight of 50 rounds in the middle of the gun was very balanced and pointed well. The fun factor cannot be overstated.
The Nikon SPUR MSRP is $219.95.
Specifications:
- CALIBER: 40S&W
- BARREL: 16.1″, 1:16 twist, Medium Taper, 4140CM, SBN
- MUZZLE: CMMG SV Brake, threaded .578-28
- RECEIVER: Forged 7075-T6 AL M4 type upper, Forged 7075-T6 AL Lower
- HANDGUARD: CMMG RML15 M-Lok handguard
- FINISH: Cerakote Receivers, Hand Guard, Ejection Port Cover, and RipStock
- CHARGING HANDLE: CMMG Oversized Ambi
- PISTOL GRIP: Magpul MOE
- BUTTSTOCK: CMMG RipStock with 6 Position Enhanced Receiver Extension
- TRIGGER: Geissele Automatics SSA 2-Stage
- TRIGGER GUARD: Integrated Into Lower
- SAFETY SELECTOR: CMMG Ambi
- MAGAZINE: Glock 22rd
- WEIGHT: 6lbs 7oz(unloaded)
- LENGTH: 32.7″(stock collapsed)
The .40 S&W Resolute MSRP starts at $1,399.95 This gun is law enforcement tough with low recoil and high energy. CMMG is famous for quality, you get what you pay for.
Alan & Chrish, try reading the second sentence of the article. Clearly states in black & white “Law enforcement asked for a .40 S&W carbine that used the same magazine as their Glocks.”
.40 S&W is the dumbest cartridge, not as powerful as .45, more powerful than 9.
The 40 is actually more powerful than both 9 and 45. It’s only slightly weaker than 10mm in bullet weights less than 155gr. Look up underwood ammunition the energy of 40 cal rounds are more powerful than any +P+ 9mm or 45. Only the 10mm and 45 super are more powerful.
Rane is correct. .40 Smith & Wesson is more powerful than .45 Auto and 9 millimeter Luger. I like using the .45 Auto in handguns but I like .40 S&W more. You get more rounds in your magazine usually over .45 Auto handgun.
.40 Smith & Wesson and 9 millimeter Luger are much better carbine rounds in my opinion. .45 Auto gains nothing with a barrel that is longer than 13 inches.
Yes exactly! 10 mm and 13″ barrel to optimize size and velocity.
I built a 10mm DI with an 8” barrel. I use a 6.8 spc bolt and standard ar carrier. The gas system is custom. I used a QC10 Glock mag lower. I had to remove the ejector from the lower, but other than that the upper and lower work great together and the bolt locks back on empty mag. I’m able to load my 10mm to 40K plus PSI because it’s an AR chamber with a locking bolt- not blowback. It shoots very smooth nearly no recoil (Way less than 5.56) and my velocities are impressive. I’m pushing 135 gr pills to over 1800 fps. Accuracy is good too. 1” at 25 yards with Holosun red dot. The dot is as big as the groups. Check out RMW extreme for uppers. I plan to hog hunt with my setup. With 10mm you can use a DI gas system because of the extra pressure. With 40 you can’t. So maybe their delayed rotating bolt system isn’t designed for the pressure of the 10mm- I don’t know. But the 40 in a long barrel is no slouch. It’s damn near identical to 10mm in lower bullet weights. I own and reload both calibers and the 10mm only starts to really outshine the 40 after 155 gr bullet weights. That’s due mostly in part to loss of case space from the longer bullets. Both cartridges operate at comparable pressures.
Sweet, but in this format, why not 10mm??