Does the Harrington & Richardson M16A2 work with the FailZero AR9?

Harrington & Richardson M16A2 Lower Receiver, Black

Lower Receiver

Harrington & Richardson M16A2

from $160.00

FailZero AR9, 9mm BCG, Black Nitride

Bolt Carrier Group

FailZero AR9

from $132.03

Harrington & Richardson lower and FailZero bolt carrier group compatibility

They fit, with a catch

The Harrington & Richardson M16A2 works with the FailZero AR9, with one thing to check: Lower Receiver (5.56 NATO) needs a 9mm magazine well adapter for a PCC/9mm build.

No one has built this exact setup yet, but Harrington & Richardson lowers with FailZero 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 Harrington & Richardson lower and FailZero bolt carrier group

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

Bolt Carrier Groups builders put on the Harrington & Richardson M16A2

Share of builds with the Harrington & Richardson M16A2 and any bolt carrier group

Lower Receivers builders put under the FailZero AR9

Share of builds with the FailZero AR9 and any lower

  • Harrington & Richardson M16A2

    Of lower picks
    0%
    Median paid
    $160

  • FailZero AR9

    Of bolt carrier group picks
    0.3%
    Median paid
    $131
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 Harrington & Richardson lower 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.

Charging Handle

Upper Receiver

Trigger

Pistol Grip

Stock & Brace

Suppressor

Optic

Barrel

Handguard

Harrington & Richardson M16A2 vs FailZero AR9: specs and prices

Harrington & RichardsonFailZero AR9
Best price$160.00 at Palmetto State Armory$132.03 at BattleHawk Armory
Stores1 of 1 in stock4 of 4 in stock
AssemblyStrippedn/a
PlatformAR-15n/a
Caliber5.56 NATOn/a
Trigger Pin.154n/a
FinishHardcoat AnodizedNitride
ColorBlackn/a
Cartridgen/a9mm
Stylen/aPistol Caliber Blow Back Carrier

Both for $292.03 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.

Harrington & Richardson M16A2

FailZero AR9

Price history, last 90 days

  • Harrington & Richardson M16A2: lowest $160.00 on Jul 12, highest $160.00 on Jul 12 over the last 90 days.
  • FailZero AR9: lowest $132.03 on Jul 5, highest $179.99 on Aug 28 over the last 90 days.

Bolt Carrier Groups frequently paired with the Harrington & Richardson M16A2

Most picked next to it in real builds. Only parts our rules say fit the Harrington & Richardson M16A2 are listed.

Lower Receivers frequently paired with the FailZero AR9

Most picked next to it in real builds. Only parts our rules say fit the FailZero AR9 are listed.