Does the CMMG MK3/.308WIN Tungsten Tungsten work with the Proof Research / 308 AR Carbon Fiber?

CMMG Upper Receiver Assembly Mk3/.308WIN Tungsten Tungsten

Upper Receiver

CMMG MK3/.308WIN Tungsten Tungsten

from $279.99

Ar-15/ 308 Ar Carbon Fiber Barrels - 308 Winchester 1-10 Twist 18'''' Carbon Fiber Barrel

Barrel

Proof Research / 308 AR Carbon Fiber

from $999.00

CMMG upper and Proof Research barrel compatibility

Yes, they fit

The CMMG MK3/.308WIN Tungsten Tungsten works with the Proof Research / 308 AR Carbon Fiber. Our compatibility rules found no conflict between them.

This exact setup is in a real GunPartPicker build.

Counted from real GunPartPicker builds: parts lists people put together while planning to buy.

Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.

Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.

How often builders pair the CMMG upper and Proof Research barrel

Backed by thousands of qualified builds that have both an upper and a barrel.

Upper Receivers builders put under the Proof Research / 308 AR Carbon Fiber

Share of builds with the Proof Research / 308 AR Carbon Fiber and any upper

  • CMMG MK3/.308WIN Tungsten Tungsten

    Of upper picks
    0%
    Median paid
    n/a

  • Proof Research / 308 AR Carbon Fiber

    Of barrel picks
    0.1%
    Median paid
    n/a
How we count ⌄

These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.

Frequently built with the CMMG upper and Proof Research barrel

The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.

Muzzle Device

Pistol Grip

Suppressor

Handguard

Trigger

Charging Handle

Bolt Carrier Group

Gas Block

Lower Receiver

CMMG MK3/.308WIN Tungsten vs Proof Research / 308 AR Carbon: specs and prices

CMMG MK3/.308WIN TungstenProof Research / 308 AR
Best price$279.99 at Optics Planet$999.00 at Optics Planet
Stores0 of 1 in stock3 of 3 in stock
AssemblyStrippedn/a
PlatformAR-10n/a
Caliber.308 Win.308 Win
Lengthn/a18
Twistn/a1:10

Both for $1278.99 at today's best prices.

Today's best prices and 90 day price history

Every store we track for each part, cheapest in stock first. Prices are checked through the day.

CMMG MK3/.308WIN Tungsten Tungsten

Proof Research / 308 AR Carbon Fiber

Price history, last 90 days

  • CMMG MK3/.308WIN Tungsten Tungsten: lowest $279.99 on Jul 5, highest $279.99 on Jul 5 over the last 90 days.
  • Proof Research / 308 AR Carbon Fiber: lowest $999.00 on Jul 5, highest $1109.99 on Sep 29 over the last 90 days.

Barrels most paired with CMMG uppers

The CMMG MK3/.308WIN Tungsten Tungsten is not in enough builds yet, so these are the most picked next to any CMMG upper. Only parts our rules say fit the CMMG MK3/.308WIN Tungsten Tungsten are listed.

Upper Receivers frequently paired with the Proof Research / 308 AR Carbon Fiber

Most picked next to it in real builds. Only parts our rules say fit the Proof Research / 308 AR Carbon Fiber are listed.