Does the Harrington & Richardson BLEM XM607 work with the Diamondback Firearms?
Harrington & Richardson lower and Diamondback barrel compatibility
Yes, they fit
The Harrington & Richardson BLEM XM607 Carbine works with the Diamondback Firearms. Our compatibility rules found no conflict between them.
This exact setup is in a real GunPartPicker build.
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 Diamondback barrel
Backed by thousands of qualified builds that have both a lower and a barrel.
Share of builds with the Diamondback Firearms and any lower
- This pairHarrington & Richardson BLEM XM607 Carbine10%
- Foxtrot Mike Products FM9 Premium 9mmDoes not fit10%
Harrington & Richardson BLEM XM607
Not in enough builds yet to report.
Diamondback Firearms
- Of barrel picks
- 0.2%
- Median paid
- $70
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 Diamondback barrel
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Gas Block
Pistol Grip
Handguard

Daniel Defense MFR XL Free Float
Fits both
Charging Handle
Stock & Brace
Harrington & Richardson BLEM vs Diamondback Firearms: specs and prices
| Harrington & Richardson BLEM | Diamondback Firearms | |
|---|---|---|
| Best price | n/a | $70.00 at BattleHawk Armory |
| Stores | n/a | 5 of 5 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | 5.56 NATO |
| Trigger Pin | .154 | n/a |
| Color | Gray | n/a |
| Gas System | n/a | Pistol |
| Length | n/a | 7 |
| Twist | n/a | 1:8 |
| Contour | n/a | HBAR |
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
- Diamondback Firearms: lowest $78.20 on Jul 5, highest $101.49 on Jul 7 over the last 90 days.
Barrels most paired with Harrington & Richardson lowers
The Harrington & Richardson BLEM XM607 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 BLEM XM607 are listed.
Lower Receivers frequently paired with the Diamondback Firearms
Most picked next to it in real builds. Only parts our rules say fit the Diamondback Firearms are listed.






















