Does the Smith & Wesson M&P15 Lower work with the CMMG Resolute(R) MK4 300 Blackout?
Lower Receiver
Smith & Wesson M&P15 Lower 5.56x45mm/.223 Remington
from $269.99
Upper Receiver
CMMG Resolute(R) MK4 300 Blackout Assembled W/P&W Brake
from $432.70
Smith & Wesson lower and CMMG upper compatibility
Yes, they fit
The Smith & Wesson M&P15 Lower 5.56x45mm/.223 works with the CMMG Resolute(R) MK4 300 Blackout Assembled. 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.
Smith & Wesson M&P15 Lower vs CMMG Resolute(R) MK4 300: specs and prices
| Smith & Wesson M&P15 Lower | CMMG Resolute(R) MK4 300 | |
|---|---|---|
| Best price | $339.20 at Classic Firearms | $519.99 at Optics Planet |
| Stores | 4 of 6 in stock | 2 of 3 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 5.56 NATO | 300 Blackout |
| Color | Black | n/a |
| Length | n/a | 14.5 |
Both for $859.19 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.
Smith & Wesson M&P15 Lower 5.56x45mm/.223
Price history, last 90 days
- Smith & Wesson M&P15 Lower: lowest $269.99 on Jul 11, highest $420.99 on Sep 26 over the last 90 days.
- CMMG Resolute(R) MK4 300 Blackout: lowest $432.70 on Jul 5, highest $595.38 on Aug 30 over the last 90 days.