Does the Harrington & Richardson Blem Harrington work with the Sons of Liberty Gun Works 5.56 158?

Upper Receiver
Harrington & Richardson Blem Harrington & Richardson 9mm

Bolt Carrier Group
Sons of Liberty Gun Works 5.56 158 Carpenter Sp/HPT/MPI
from $157.99
Harrington & Richardson upper and Sons of Liberty Gun Works bolt carrier group compatibility
Yes, they fit
The Harrington & Richardson Blem Harrington & works with the Sons of Liberty Gun Works 5.56 158 Carpenter. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Harrington & Richardson uppers with Sons of Liberty Gun Works 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 upper and Sons of Liberty Gun Works bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Sons of Liberty Gun Works 5.56 158 and any upper
Harrington & Richardson Blem Harrington
Not in enough builds yet to report.
Sons of Liberty Gun Works 5.56 158
- Of bolt carrier group picks
- 1.2%
- Median paid
- $149
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 upper and Sons of Liberty Gun Works 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

Radian Raptor & Talon Safety Selector Combo
Unconfirmed
Gas Block
Pistol Grip
Stock & Brace
Harrington & Richardson Blem vs Sons of Liberty Gun Works 5.56: specs and prices
| Harrington & Richardson Blem | Sons of Liberty Gun Works | |
|---|---|---|
| Best price | n/a | $179.00 at BattleHawk Armory |
| Stores | n/a | 6 of 9 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-9 | n/a |
| Gas System Length | Blowback | n/a |
| Caliber | 9mm | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Nitride |
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
- Sons of Liberty Gun Works 5.56 158: lowest $157.99 on Jul 6, highest $199.00 on Jul 9 over the last 90 days.
Bolt Carrier Groups most paired with Harrington & Richardson uppers
The Harrington & Richardson Blem Harrington is not in enough builds yet, so these are the most picked next to any Harrington & Richardson upper. Only parts our rules say fit the Harrington & Richardson Blem Harrington are listed.
Upper Receivers frequently paired with the Sons of Liberty Gun Works 5.56 158
Most picked next to it in real builds. Only parts our rules say fit the Sons of Liberty Gun Works 5.56 158 are listed.


















