Does the KAK Complete AR-15 Upper Receiver work with the KAK Industry DEMO KAK Industry K-SPEC?

KAK Complete AR-15 Upper Receiver - 5.56 NATO - 11.5"

Upper Receiver

KAK Complete AR-15 Upper Receiver

from $382.46

DEMO KAK Industry K-SPEC Enhanced Bolt Carrier Group AR-15 7.62x39mm Dual Ejector Down Vent Sand Cuts NP3

Bolt Carrier Group

KAK Industry DEMO KAK Industry K-SPEC Enhanced 7.62x39mm

from $225.99

KAK Industry upper and KAK Industry bolt carrier group compatibility

They fit, with a catch

The KAK Complete AR-15 Upper Receiver works with the KAK Industry DEMO KAK Industry K-SPEC Enhanced, with one thing to check: Bolt Carrier Group (7.62x39mm) has a 7.62x39 bolt; a 5.56 NATO build needs a 5.56 / .223 bolt.

No one has built this exact setup yet, but KAK Industry uppers with KAK Industry bolt carrier groups are a common pairing.

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 KAK Industry upper and KAK Industry bolt carrier group

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

  • KAK Complete AR-15 Upper Receiver

    Of upper picks
    0%
    Median paid
    $421

  • KAK Industry DEMO KAK Industry K-SPEC

    Not in enough builds yet to report.

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 KAK Industry upper and KAK Industry bolt carrier group

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

Pistol Grip

Lower Receiver

Optic

Charging Handle

Trigger

Rifle Scope

Suppressor

Stock & Brace

Light

KAK Complete AR-15 Upper vs KAK Industry DEMO KAK Industry: specs and prices

KAK Complete AR-15 UpperKAK Industry DEMO KAK
Best price$382.46 at Primary Arms$225.99 at Optics Planet
Stores0 of 1 in stock0 of 1 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Caliber5.56 NATOn/a
Length11.5n/a
Cartridgen/a7.62x39mm

Both for $608.45 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.

KAK Complete AR-15 Upper Receiver

KAK Industry DEMO KAK Industry K-SPEC Enhanced

Price history, last 90 days

  • KAK Complete AR-15 Upper Receiver: lowest $382.46 on Jul 5, highest $382.46 on Jul 5 over the last 90 days.
  • KAK Industry DEMO KAK Industry K-SPEC: lowest $225.99 on Jul 5, highest $225.99 on Jul 5 over the last 90 days.

Bolt Carrier Groups most paired with KAK Industry uppers

The KAK Complete AR-15 Upper Receiver is not in enough builds yet, so these are the most picked next to any KAK Industry upper. Only parts our rules say fit the KAK Complete AR-15 Upper Receiver are listed.

Upper Receivers most paired with KAK Industry bolt carrier groups

The KAK Industry DEMO KAK Industry K-SPEC is not in enough builds yet, so these are the most picked next to any KAK Industry bolt carrier group. Only parts our rules say fit the KAK Industry DEMO KAK Industry K-SPEC are listed.