Does the CMMG MK4 .300BLK Banshee Upper Group work with the Sons of Liberty Gun Works 5.56 158?

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in 1-7 Twist 5/8 X 24 TPI 16.5in Armor Black

Upper Receiver

CMMG MK4 .300BLK Banshee Upper Group Receiver 8in 1-7 Twist

from $660.23

Sons of Liberty Gun Works Ar-15 5.56 Bolt Carrier Group 158 Carpenter Sp/hpt/mpi

Bolt Carrier Group

Sons of Liberty Gun Works 5.56 158 Carpenter Sp/HPT/MPI

from $157.99

CMMG upper and Sons of Liberty Gun Works bolt carrier group compatibility

Yes, they fit

The CMMG MK4 .300BLK Banshee Upper Group Receiver works with the Sons of Liberty Gun Works 5.56 158 Carpenter. 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 Sons of Liberty Gun Works 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 MK4 .300BLK Banshee Upper Group

Share of builds with the CMMG MK4 .300BLK Banshee Upper Group and any bolt carrier group

Upper Receivers builders put under the Sons of Liberty Gun Works 5.56 158

Share of builds with the Sons of Liberty Gun Works 5.56 158 and any upper

  • CMMG MK4 .300BLK Banshee Upper Group

    Of upper picks
    0.1%
    Median paid
    $657

  • Sons of Liberty Gun Works 5.56 158

    Of bolt carrier group picks
    1.2%
    Median paid
    $149
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 Sons of Liberty Gun Works bolt carrier group

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

Trigger

Charging Handle

Gas Block

Lower Receiver

Pistol Grip

Optic

Stock & Brace

Light

CMMG MK4 .300BLK Banshee Upper vs Sons of Liberty Gun Works 5.56: specs and prices

CMMG MK4 .300BLK BansheeSons of Liberty Gun Works
Best price$789.99 at Optics Planet$179.00 at BattleHawk Armory
Stores1 of 2 in stock6 of 9 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Caliber300 Blackoutn/a
Length8n/a
Cartridgen/a5.56 NATO
Finishn/aNitride

Both for $968.99 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 MK4 .300BLK Banshee Upper Group Receiver

Sons of Liberty Gun Works 5.56 158 Carpenter

Price history, last 90 days

  • CMMG MK4 .300BLK Banshee Upper Group: lowest $660.23 on Jul 5, highest $789.99 on Jul 12 over the last 90 days.
  • Sons of Liberty Gun Works 5.56 158: lowest $157.99 on Jul 6, highest $199.00 on Jul 9 over the last 90 days.

Bolt Carrier Groups frequently paired with the CMMG MK4 .300BLK Banshee Upper Group

Most picked next to it in real builds. Only parts our rules say fit the CMMG MK4 .300BLK Banshee Upper Group are listed.

Upper Receivers frequently paired with the Sons of Liberty Gun Works 5.56 158

Most picked next to it in real builds. Only parts our rules say fit the Sons of Liberty Gun Works 5.56 158 are listed.