Does the Harrington & Richardson M16A1 Lower GI work with the Tacfire 10" Upper 9mm 1:10?
Lower Receiver
Harrington & Richardson M16A1 Lower GI Quality Trapdoor
from $389.99
Upper Receiver
Tacfire 10" Upper 9mm 1:10
from $275.97
Harrington & Richardson lower and TacFire upper compatibility
They fit, with a catch
The Harrington & Richardson M16A1 Lower GI Quality works with the Tacfire 10" Upper 9mm 1:10, with one thing to check: Lower Receiver (5.56 NATO) needs a 9mm magazine well adapter for a PCC/9mm build.
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.
Harrington & Richardson M16A1 vs Tacfire 10" Upper 9mm 1:10: specs and prices
| Harrington & Richardson | Tacfire 10" Upper 9mm 1:10 | |
|---|---|---|
| Best price | $389.99 at Palmetto State Armory | $275.97 at BattleHawk Armory |
| Stores | 1 of 1 in stock | 4 of 5 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-9 |
| Caliber | 5.56 NATO | 9mm |
| Trigger Pin | .154 | n/a |
| Color | Gray | n/a |
| Length | n/a | 10 |
Both for $665.96 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.
Price history, last 90 days
- Tacfire 10" Upper 9mm 1:10: lowest $267.99 on Sep 17, highest $346.99 on Aug 5 over the last 90 days.