CMMG Resolute Mk4 6.5mm Grendel
Model: 64AEF0C
CMMG Resolute Mk4 6.5mm Grendel
Model: 64AEF0C
Full Specifications
About This Firearm
CMMG's Grendel is the one that arrives finished. A drop-in trigger, a 60/90-degree ambidextrous selector and a muzzle brake are all fitted from the factory, the barrel is 16.1 inches of 416 stainless in salt bath nitride with a 1:8 twist, and the stock is CMMG's RipStock. It weighs 6.4 lbs and has an MSRP of $1,599.95.
Look at the handguard before planning anything on top of it. CMMG's EML15 puts M-LOK slots at 3, 6, 9 and 12 o'clock and deliberately leaves out the full-length Picatinny section, so a folding front sight or a clip-on device needs an M-LOK rail panel first. Below that, the rifle is conventional where it counts: the lower is a forged Mk4 AR-15 lower, so the trigger, grip, safety and stock hardware are ordinary parts, while the upper is billet. The muzzle thread is 5/8x24, the usual 6.5 mm size, under the brake. One 10-round CMMG magazine comes with it, and CMMG backs the rifle with a lifetime guarantee against material and workmanship defects.
The Alexander Arms Tactical, from the company that developed the cartridge, has an MSRP of $1,114.47 with a mil-spec trigger and an A2 flash hider. The Ruger American Rifle Generation II Predator is a bolt action at an MSRP of $769.00 that feeds from AR-style magazines in the same chambering.
Best For
Strengths & Limitations
- The trigger, selector and brake are all CMMG's own ZEROED parts fitted at the factory, so the rifle does not need the usual round of upgrades.
- The barrel is 416 stainless with a salt bath nitride finish, which is a corrosion-resistant combination rather than a cosmetic one.
- CMMG's lifetime quality guarantee covers material and workmanship defects on every product it makes.
- The handguard has no full-length top rail, so anything that wants Picatinny up front needs an M-LOK panel added.
- A single magazine comes in the box, and it is a CMMG Grendel magazine rather than a part shared with 5.56 ARs.
- A braked carbine is loud for whoever is standing next to you, and the brake is what the threads arrive wearing.
Compatible Ammunition
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Frequently Asked Questions
Does the handguard have a top Picatinny rail?
No. CMMG states that the EML15 handguard omits the full-length Picatinny section and puts M-LOK slots at 12 o'clock instead, so a front sight or a clip-on needs a rail panel.
Will AR-15 parts fit it?
The lower will take them. It is a forged Mk4 AR-15 lower, so trigger, grip, safety and stock hardware are standard. The upper is CMMG billet.
What is the muzzle thread?
It is 5/8x24, under the ZEROED muzzle brake, which is the common thread for 6.5 mm suppressor mounts.
What magazine does it use?
A CMMG 10-round Grendel magazine, and one comes with the rifle.
What is the warranty?
CMMG backs every product with a lifetime guarantee against material and workmanship defects.
