Does the Primary Weapons Systems MK1 Mod 2-M work with the Sons of Liberty Gun Works M4-L89 CHF?
Lower Receiver
Primary Weapons Systems MK1 Mod 2-M
from $558.89
Upper Receiver
Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled
from $963.86
Primary Weapon Systems lower and Sons of Liberty Gun Works upper compatibility
Yes, they fit
The Primary Weapons Systems MK1 Mod 2-M works with the Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO. 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.
Primary Weapons Systems MK1 vs Sons of Liberty Gun Works: specs and prices
| Primary Weapons Systems MK1 | Sons of Liberty Gun Works | |
|---|---|---|
| Best price | $558.89 at Guns.com | $963.86 at Classic Firearms |
| Stores | 3 of 5 in stock | 0 of 3 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Gas System Length | n/a | Mid-Length |
| Caliber | n/a | 5.56 NATO |
| Receiver Type | n/a | M4 |
| Length | n/a | 13.7 |
Both for $1522.75 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
- Primary Weapons Systems MK1 Mod 2-M: lowest $558.89 on Jul 14, highest $699.99 on Sep 27 over the last 90 days.
- Sons of Liberty Gun Works M4-L89 CHF: lowest $963.86 on Jul 11, highest $1021.25 on Jul 6 over the last 90 days.