Does the Harrington & Richardson BLEM "Slickside" work with the Ballistic Advantage Modern Series 12.5?

Upper Receiver
Harrington & Richardson BLEM "Slickside"
from $140.00

Barrel
Ballistic Advantage Modern Series 12.5 Carbine Gov't
from $93.12
Harrington & Richardson upper and Ballistic Advantage barrel compatibility
Yes, they fit
The Harrington & Richardson BLEM "Slickside" works with the Ballistic Advantage Modern Series 12.5 Carbine. Our compatibility rules found no conflict between them.
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 Ballistic Advantage barrel
Backed by thousands of qualified builds that have both an upper and a barrel.
Share of builds with the Ballistic Advantage Modern Series 12.5 and any upper
Harrington & Richardson BLEM "Slickside"
- Of upper picks
- 0%
- Median paid
- n/a
Ballistic Advantage Modern Series 12.5
- Of barrel picks
- 1.4%
- Median paid
- $98
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 Ballistic Advantage barrel
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Gas Block
Bolt Carrier Group

PSA 5.56 Full-Auto Nitride MPI
Fits both
Handguard
Stock & Brace
Lower Receiver
Muzzle Device

SilencerCo 30 Cal Muzzle Brake
Fits both
Harrington & Richardson BLEM vs Ballistic Advantage Modern: specs and prices
| Harrington & Richardson BLEM | Ballistic Advantage Modern | |
|---|---|---|
| Best price | $140.00 at Palmetto State Armory | $93.12 at Optics Planet |
| Stores | 0 of 1 in stock | 5 of 11 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | 5.56 NATO |
| Receiver Type | Slick Side | n/a |
| Gas System | n/a | Carbine |
| Length | n/a | 12.5 |
| Twist | n/a | 1:7 |
| Contour | n/a | Government |
| Thread | n/a | 1/2x28 |
| Weight | n/a | 22 |
Both for $233.12 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
- Harrington & Richardson BLEM "Slickside": lowest $140.00 on Jul 12, highest $140.00 on Jul 12 over the last 90 days.
- Ballistic Advantage Modern Series 12.5: lowest $93.12 on Jul 21, highest $152.00 on Jul 7 over the last 90 days.
Barrels most paired with Harrington & Richardson uppers
The Harrington & Richardson BLEM "Slickside" 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 "Slickside" are listed.
Upper Receivers frequently paired with the Ballistic Advantage Modern Series 12.5
Most picked next to it in real builds. Only parts our rules say fit the Ballistic Advantage Modern Series 12.5 are listed.

















