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CMMG Endeavor Mk3 6.5 Creedmoor 20in AR-10 Rifle 20rd Black

UPC: 810144729152

$1,771.99

2 in stock

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Description

The 6.5 Creedmoor earned its reputation by doing one thing very well: staying flat and hitting steel way out there without beating up your shoulder. The Endeavor Mk3 from CMMG puts that cartridge in a semi-auto large-frame AR built on the LR-308/DPMS Gen 1 high-pattern receiver, and the 20 inch barrel length is a smart middle ground. You get enough velocity to take advantage of those slippery 6.5mm bullets without ending up with a rifle that feels like a boat oar when you carry it to a hunting spot or move between positions at a match.

What Makes the Endeavor Mk3 Shoot

The barrel is 416 stainless steel with a salt bath nitride finish and a 1:8 twist, which stabilizes the 140 grain class bullets most 6.5 Creedmoor fans reach for. A rifle-length gas system keeps the action running smooth, and CMMG's ZEROED muzzle brake on the 5/8×24 threads takes the edge off recoil so you can spot your own impacts. The ZEROED drop-in trigger, ambidextrous charging handle, and 60/90 degree safety selector round out a control setup that feels dialed in from the first range trip.

Built for Glass and Gear

Both receivers are machined from billet 7075-T6 aluminum and wear a durable Cerakote finish in Armor Black. The free-floating EML15 handguard gives you M-LOK slots at the 12, 3, 6, and 9 o'clock positions plus Picatinny sections, so mounting a bipod, sling, or night optic is simple. A Magpul MOE rifle stock keeps things solid at the rear, and the whole package weighs in at 8.9 pounds with a 41.3 inch overall length.

Where This CMMG 6.5 Creedmoor Fits

This is a rifle for folks who want AR ergonomics and fast follow-up shots with genuine long-range reach. Deer and antelope hunters, PRS-curious range regulars, and anyone tired of running a bolt between shots will feel at home behind it. It ships with a 20-round Magpul PMAG, so all it needs is glass and ammo.

Key Specifications

  • Caliber: 6.5 Creedmoor
  • Action: Semi-automatic, direct impingement
  • Platform: Mk3 (LR-308/DPMS Gen 1 high-pattern)
  • Barrel Length: 20 inches
  • Barrel Material: 416 stainless steel, salt bath nitride
  • Twist Rate: 1:8
  • Muzzle Device: CMMG ZEROED muzzle brake, 5/8×24 thread
  • Gas System: Rifle-length, 0.750 non-adjustable gas block
  • Receivers: Billet 7075-T6 aluminum, Cerakote Armor Black
  • Handguard: CMMG EML15 free-float M-LOK
  • Stock: Magpul MOE rifle stock
  • Trigger: CMMG ZEROED drop-in
  • Magazine: Magpul PMAG, 20 rounds
  • Weight: 8.9 lbs
  • Overall Length: 41.3 inches
  • UPC / MPN: 810144729152 / 65A780CAB

What’s Included

  • CMMG Endeavor Mk3 rifle
  • One 20-round Magpul PMAG

Frequently Asked Questions

Is the CMMG Endeavor Mk3 an AR-10?

Close enough that most people call it one. It's built on CMMG's Mk3 platform, which follows the LR-308/DPMS Gen 1 high-pattern design rather than the Armalite AR-10 pattern. That matters for parts compatibility, so if you plan to swap uppers or furniture down the road, look for DPMS high-pattern components.

What magazines does the Endeavor Mk3 6.5 Creedmoor use?

It ships with a 20-round Magpul PMAG and runs standard LR-308/SR-25 pattern magazines. That's good news since PMAGs in this pattern are affordable, easy to find, and proven reliable. No proprietary mags to hunt down.

Can I run a suppressor on this rifle?

Yes. The barrel is threaded 5/8×24, which is the standard thread pitch for 6.5 Creedmoor and .30 caliber suppressors and muzzle devices. Just remove the ZEROED muzzle brake and thread on your can or a compatible mount. Keep in mind the gas block is non-adjustable, so expect a bit more gas back when shooting suppressed.

Is the 20 inch barrel long enough for 6.5 Creedmoor?

For most uses, absolutely. You give up a little velocity compared to a 24 inch tube, but the 1:8 twist stainless barrel still stabilizes long, heavy match bullets and keeps the cartridge effective well past what most of us have range access to. The tradeoff is a rifle that's noticeably handier for hunting and field positions.

Additional information

UPC

810144729152

Manufacturer

Manufacturer Part Number

65A780C-AB

Shipping Weight

11.4

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