Does the CMMG MK/4 Armor work with the FAXON Firearms Superfinished 5.56 NATO?

CMMG MK/4 AR-15 Upper Receiver Assembly Armor Black

Upper Receiver

CMMG MK/4 Armor

from $130.55

Faxon Firearms Superfinished 5.56 Nato Bolt Carrier Group Gunner Lightweight Chrome Chrome

Bolt Carrier Group

FAXON Firearms Superfinished 5.56 NATO Gunner Lightweight

from $289.80

CMMG upper and Faxon Firearms bolt carrier group compatibility

Yes, they fit

The CMMG MK/4 Armor works with the FAXON Firearms Superfinished 5.56 NATO Gunner. 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 Faxon Firearms bolt carrier group

Backed by thousands of qualified builds that have both an upper and a bolt carrier group.

Bolt Carrier Groups builders put on the CMMG MK/4 Armor

Share of builds with the CMMG MK/4 Armor and any bolt carrier group

Upper Receivers builders put under the FAXON Firearms Superfinished 5.56 NATO

Share of builds with the FAXON Firearms Superfinished 5.56 NATO and any upper

  • CMMG MK/4 Armor

    Of upper picks
    0.1%
    Median paid
    $130

  • FAXON Firearms Superfinished 5.56 NATO

    Of bolt carrier group picks
    0%
    Median paid
    $306
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 Faxon Firearms bolt carrier group

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

Charging Handle

Lower Receiver

Gas Block

Muzzle Device

Rifle Scope

Stock & Brace

Barrel

Handguard

Trigger

Suppressor

Pistol Grip

Optic

CMMG MK/4 Armor vs FAXON Firearms Superfinished: specs and prices

CMMG MK/4 ArmorFAXON Firearms Superfinished
Best price$134.99 at Palmetto State Armory$289.80 at Optics Planet
Stores2 of 3 in stock3 of 3 in stock
AssemblyStrippedn/a
PlatformAR-15n/a
Cartridgen/a5.56 NATO
Finishn/aChrome

Both for $424.79 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 MK/4 Armor

FAXON Firearms Superfinished 5.56 NATO Gunner

Price history, last 90 days

  • CMMG MK/4 Armor: lowest $130.55 on Jul 5, highest $144.79 on Jul 24 over the last 90 days.
  • FAXON Firearms Superfinished 5.56 NATO: lowest $299.46 on Jul 5, highest $322.00 on Jul 10 over the last 90 days.

Bolt Carrier Groups frequently paired with the CMMG MK/4 Armor

Most picked next to it in real builds. Only parts our rules say fit the CMMG MK/4 Armor are listed.

Upper Receivers frequently paired with the FAXON Firearms Superfinished 5.56 NATO

Most picked next to it in real builds. Only parts our rules say fit the FAXON Firearms Superfinished 5.56 NATO are listed.