Does the Expo Arms 5.56 NATO Barreled Upper work with the KAK Industry DEMO KAK Industry K-SPEC?

Expo Arms 5.56 NATO AR-15 Barreled Upper - 16" - Mid-Length - Overrun

Upper Receiver

Expo Arms 5.56 NATO Barreled Upper

from $279.99

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

Expo Arms upper and KAK Industry bolt carrier group compatibility

They fit, with a catch

The Expo Arms 5.56 NATO Barreled Upper 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 Expo Arms 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 Expo Arms upper and KAK Industry 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 Expo Arms 5.56 NATO Barreled Upper

Share of builds with the Expo Arms 5.56 NATO Barreled Upper and any bolt carrier group

  • Expo Arms 5.56 NATO Barreled Upper

    Of upper picks
    0.1%
    Median paid
    $280

  • 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 Expo Arms 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.

Charging Handle

Lower Receiver

Light

Rifle Scope

Optic

Trigger

Suppressor

Expo Arms 5.56 NATO Barreled vs KAK Industry DEMO KAK Industry: specs and prices

Expo Arms 5.56 NATO BarreledKAK Industry DEMO KAK
Best price$279.99 at Primary Arms$225.99 at Optics Planet
Stores0 of 1 in stock0 of 1 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Gas System LengthMid-Lengthn/a
Caliber5.56 NATOn/a
Receiver TypeA4n/a
Length16n/a
Cartridgen/a7.62x39mm

Both for $505.98 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.

Expo Arms 5.56 NATO Barreled Upper

KAK Industry DEMO KAK Industry K-SPEC Enhanced

Price history, last 90 days

  • Expo Arms 5.56 NATO Barreled Upper: lowest $279.99 on Jul 7, highest $279.99 on Jul 7 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 frequently paired with the Expo Arms 5.56 NATO Barreled Upper

Most picked next to it in real builds. Only parts our rules say fit the Expo Arms 5.56 NATO Barreled Upper 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.