Does the Harrington & Richardson M16A1 Lower GI work with the Spike's Tactical Flat Top Upper w/?

Harrington & Richardson M16A1 Complete Lower GI Quality Trapdoor Stock, Gray

Lower Receiver

Harrington & Richardson M16A1 Lower GI Quality Trapdoor

from $389.99

Spike's Tactical Flat Top Upper w/ Ejection Port Door, 9MM, Black - SFT902D

Upper Receiver

Spike's Tactical Flat Top Upper w/ Ejection Port Door

from $103.50

Harrington & Richardson lower and Spike's Tactical upper compatibility

Yes, they fit

The Harrington & Richardson M16A1 Lower GI Quality works with the Spike's Tactical Flat Top Upper w/ Ejection Port. Our compatibility rules found no conflict between them.

No one has built this exact setup yet, but Harrington & Richardson lowers with Spike's Tactical uppers 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 Spike's Tactical upper

Backed by tens of thousands of qualified builds that have both a lower and an upper.

Lower Receivers builders put under the Spike's Tactical Flat Top Upper w/

Share of builds with the Spike's Tactical Flat Top Upper w/ and any lower

  • Harrington & Richardson M16A1 Lower GI

    Not in enough builds yet to report.

  • Spike's Tactical Flat Top Upper w/

    Of upper picks
    0.3%
    Median paid
    $104
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 Spike's Tactical upper

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

Charging Handle

Bolt Carrier Group

Barrel

Stock & Brace

Handguard

Pistol Grip

Light

Gas Block

Trigger

Harrington & Richardson M16A1 vs Spike's Tactical Flat Top: specs and prices

Harrington & RichardsonSpike's Tactical Flat Top
Best price$389.99 at Palmetto State Armory$103.50 at BattleHawk Armory
Stores1 of 1 in stock3 of 4 in stock
AssemblyCompleteStripped
PlatformAR-15AR-9
Caliber5.56 NATO9mm
Trigger Pin.154n/a
ColorGrayn/a
Receiver Typen/aFlat Top

Both for $493.49 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 M16A1 Lower GI Quality

Spike's Tactical Flat Top Upper w/ Ejection Port

Price history, last 90 days

  • Spike's Tactical Flat Top Upper w/: lowest $103.50 on Jul 11, highest $112.99 on Jul 6 over the last 90 days.

Upper Receivers most paired with Harrington & Richardson lowers

The Harrington & Richardson M16A1 Lower GI is not in enough builds yet, so these are the most picked next to any Harrington & Richardson lower. Only parts our rules say fit the Harrington & Richardson M16A1 Lower GI are listed.

Lower Receivers frequently paired with the Spike's Tactical Flat Top Upper w/

Most picked next to it in real builds. Only parts our rules say fit the Spike's Tactical Flat Top Upper w/ are listed.