CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm
$179.95
Upgrade your AR15 build with this 16.1″ 5.56mm barrel sub-assembly from CMMG. Features a salt bath nitride finish for durability and a 1:7 twist rate for enhanced accuracy with a variety of bullet weights.
2 in stock
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
- 16.1?
- Medium Taper Profile
- 4140 Chrome Moly
- Salt Bath Nitride Finish inside and out
- 1:7 Twist
- 5.56�45 NATO Chamber
- Threaded 1/2-28
- Midlength gas port
- .750? Gas Journal
| Weight | 2.050 lbs |
|---|---|
| Dimensions | 18.250 × 1.500 × 1.500 in |
| Manufacturer | Cmmg Inc. |
| Caliber | 5.56mm |
| Barrel Length | 16.1 inch |
| Finish | Salt Bath Nitride |
| Twist Rate | 1:7 |
| Thread Pattern | 1/2-28 |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.
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