CMMG Resolute 100 Series .308 Complete Upper Receiver Rifle Length - 16.1"

Manufactured by CMMG
Manufactured by CMMG
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The CMMG Resolute 100 Series Complete Upper Receiver Assembly is chambered in .308 Winchester with a 16.1” barrel and rifle length gas system. Fully assembled from the factory, this upper receiver group comes with all the features you expect from CMMG like an M-LOK handguard, 7075-T6 Billet receiver, and high quality barrel. The barrel is machined from high-quality 416 Stainless Steel with a salt bath Nitride finish for corrosion resistance. The medium taper is a great middle ground between rigidity and weight reduction and the 1:10 twist rate is optimal for most bullet weights. The muzzle is threaded 5/8x24 and comes with a CMMG SV Muzzle Brake attached. Recommended to be used with the CMMG Resolute .308 lower receiver.

  • 16.1” barrel chambered in .308 Winchester
  • 416 Stainless Steel with Nitride finish
  • 1:10 twist rate with medium taper
  • Rifle length gas system
  • Threaded 5/8x24 with CMMG SV Brake
  • Billet 7075-T6 billet upper
  • 15” M-LOK free float handguard
  • Black hardcoat anodized
  • .308 BCG
  • Mil-Spec charging handle and dust cover

The 15” handguard features full length M-LOK slots for customization as well as a full length picatinny top rail. It is free floated and attaches to the billet upper receiver with a steel barrel nut. The upper receiver and handguard feature a black hardcoat anodized finish to protect the aluminum from wear. The upper receiver is fully assembled with standard charging handle, dust cover, and bolt carrier group. Build a high quality AR-10 today with the CMMG Resolute 100 Complete Upper Receiver Group.
A leading manufacturer of AR-15 rifles, kits, and accessories, CMMG Inc. was established in 2002. Constantly pushing the edge, CMMG strives to develop and improve bringing you a product lineup that is second to none.
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AssemblyComplete Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourMedium Taper
Barrel Length16.1
Barrel LiningSalt Bath Nitride
Barrel Material416 Stainless Steel
Caliber Gauge.308 Win
Gas System LengthRifle
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceCMMG SV Muzzle Brake
Thread Pattern5/8 X 24
Twist Rate1:10
Weight6 lbs.

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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