Does the Tacfire 7" Upper 5.56x45mm 1:8 work with the FailZero Fail Zero .450 Bushmaster?

Tacfire 7" Complete Upper Assembly 5.56x45mm 1:8, Black - BU-556-7

Upper Receiver

Tacfire 7" Upper 5.56x45mm 1:8

from $241.33

Fail Zero .450 Bushmaster Ar-15 Bolt Carrier Group - No Hammer

Bolt Carrier Group

FailZero Fail Zero .450 Bushmaster

from $129.74

TacFire upper and FailZero bolt carrier group compatibility

Yes, they fit

The Tacfire 7" Upper 5.56x45mm 1:8 works with the FailZero Fail Zero .450 Bushmaster. 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 TacFire upper and FailZero 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 Tacfire 7" Upper 5.56x45mm 1:8

Share of builds with the Tacfire 7" Upper 5.56x45mm 1:8 and any bolt carrier group

Upper Receivers builders put under the FailZero Fail Zero .450 Bushmaster

Share of builds with the FailZero Fail Zero .450 Bushmaster and any upper

  • Tacfire 7" Upper 5.56x45mm 1:8

    Of upper picks
    1.1%
    Median paid
    $240

  • FailZero Fail Zero .450 Bushmaster

    Of bolt carrier group picks
    0.9%
    Median paid
    $130
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 TacFire upper and FailZero bolt carrier group

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

Lower Receiver

Charging Handle

Trigger

Pistol Grip

Stock & Brace

Suppressor

Tacfire 7" Upper 5.56x45mm 1:8 vs FailZero Fail Zero .450: specs and prices

Tacfire 7" Upper 5.56x45mmFailZero Fail Zero .450
Best price$241.33 at BattleHawk Armory$149.39 at BattleHawk Armory
Stores6 of 6 in stock5 of 7 in stock
AssemblyCompleten/a
PlatformAR-15n/a
Caliber5.56 NATOn/a
Length7n/a
Cartridgen/a6.5 Grendel
Stylen/aM16 Bolt Carrier
Finishn/aNickel Boron

Both for $390.72 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.

Tacfire 7" Upper 5.56x45mm 1:8

FailZero Fail Zero .450 Bushmaster

Price history, last 90 days

  • Tacfire 7" Upper 5.56x45mm 1:8: lowest $258.99 on Jul 15, highest $289.99 on Aug 2 over the last 90 days.
  • FailZero Fail Zero .450 Bushmaster: lowest $129.74 on Jul 6, highest $189.99 on Jul 27 over the last 90 days.

Bolt Carrier Groups frequently paired with the Tacfire 7" Upper 5.56x45mm 1:8

Most picked next to it in real builds. Only parts our rules say fit the Tacfire 7" Upper 5.56x45mm 1:8 are listed.

Upper Receivers frequently paired with the FailZero Fail Zero .450 Bushmaster

Most picked next to it in real builds. Only parts our rules say fit the FailZero Fail Zero .450 Bushmaster are listed.