Does the CMMG MK4/ Forward Assist Armor work with the FN America FN 16 Mid-Length 5.56mm?

CMMG Mk4/AR-15 Forward Assist Upper Receiver Assembly Armor Black

Upper Receiver

CMMG MK4/ Forward Assist Armor

from $115.27

Fn Ar-15 M16 Barrel 16 Mid-Length 5.56mm

Barrel

FN America FN 16 Mid-Length 5.56mm

from $199.73

CMMG upper and FN America barrel compatibility

Yes, they fit

The CMMG MK4/ Forward Assist Armor works with the FN America FN 16 Mid-Length 5.56mm. Our compatibility rules found no conflict between them.

This exact setup has been built more than once on GunPartPicker.

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 FN America barrel

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

Barrels builders put on the CMMG MK4/ Forward Assist Armor

Share of builds with the CMMG MK4/ Forward Assist Armor and any barrel

Upper Receivers builders put under the FN America FN 16 Mid-Length 5.56mm

Share of builds with the FN America FN 16 Mid-Length 5.56mm and any upper

  • CMMG MK4/ Forward Assist Armor

    Of upper picks
    0%
    Median paid
    $115

  • FN America FN 16 Mid-Length 5.56mm

    Of barrel picks
    2.1%
    Median paid
    $200
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 FN America barrel

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

Trigger

Bolt Carrier Group

Stock & Brace

Pistol Grip

Charging Handle

Muzzle Device

Gas Block

Lower Receiver

Optic

Buffer Tube Assembly

Handguard

CMMG MK4/ Forward Assist Armor vs FN America FN 16 Mid-Length: specs and prices

CMMG MK4/ Forward AssistFN America FN 16 Mid-Length
Best price$115.27 at BattleHawk Armory$199.73 at KY Gun Company
Stores0 of 2 in stock7 of 8 in stock
AssemblyStrippedn/a
PlatformAR-15n/a
Receiver TypeA4n/a
Calibern/a5.56 NATO
Gas Systemn/aMid-Length
Lengthn/a16
Twistn/a1:7
Contourn/aM4
Threadn/a1/2x28

Both for $315.00 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 MK4/ Forward Assist Armor

FN America FN 16 Mid-Length 5.56mm

Price history, last 90 days

  • CMMG MK4/ Forward Assist Armor: lowest $115.27 on Jul 5, highest $129.79 on Jul 26 over the last 90 days.
  • FN America FN 16 Mid-Length 5.56mm: lowest $199.73 on Jul 11, highest $298.99 on Aug 26 over the last 90 days.

Barrels most paired with CMMG uppers

The CMMG MK4/ Forward Assist Armor 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 MK4/ Forward Assist Armor are listed.

Upper Receivers frequently paired with the FN America FN 16 Mid-Length 5.56mm

Most picked next to it in real builds. Only parts our rules say fit the FN America FN 16 Mid-Length 5.56mm are listed.