Does the CMMG MK4 .300BLK Banshee Upper Group work with the PSA JAKL-15 300 Blackout Bolt & Bolt?

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

PSA JAKL-15 300 Blackout Bolt & Bolt Carrier Assembly

Bolt Carrier Group

PSA JAKL-15 300 Blackout Bolt & Bolt Carrier

from $249.99

CMMG upper and Palmetto State Armory bolt carrier group compatibility

Yes, they fit

The CMMG MK4 .300BLK Banshee Upper Group Receiver works with the PSA JAKL-15 300 Blackout Bolt & Bolt Carrier. 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 Palmetto State Armory 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 PSA JAKL-15 300 Blackout Bolt & Bolt

Share of builds with the PSA JAKL-15 300 Blackout Bolt & Bolt and any upper

  • CMMG MK4 .300BLK Banshee Upper Group

    Of upper picks
    0.1%
    Median paid
    $657

  • PSA JAKL-15 300 Blackout Bolt & Bolt

    Of bolt carrier group picks
    0.1%
    Median paid
    $250
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 Palmetto State Armory 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

Light

Suppressor

Optic

Pistol Grip

Lower Receiver

Stock & Brace

Trigger

CMMG MK4 .300BLK Banshee Upper vs PSA JAKL-15 300 Blackout Bolt: specs and prices

CMMG MK4 .300BLK BansheePSA JAKL-15 300 Blackout
Best price$789.99 at Optics Planet$249.99 at Palmetto State Armory
Stores1 of 2 in stock1 of 1 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Caliber300 Blackoutn/a
Length8n/a
Cartridgen/a300 Blackout

Both for $1039.98 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

PSA JAKL-15 300 Blackout Bolt & Bolt Carrier

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.

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 PSA JAKL-15 300 Blackout Bolt & Bolt

Most picked next to it in real builds. Only parts our rules say fit the PSA JAKL-15 300 Blackout Bolt & Bolt are listed.