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CMMG
CMMG 55BC76A MK4 T 223 Remington/5.56 NATO 16" 4140 Steel Threaded Black
Product Code : 815835015866
$663.99
Mfg Item #: 55BC76A
When modularity, affordability, and quality are all important the Mk4 T is the upper of choice. The Mk4 T introduces CMMG's RKM series of KeyMod free-float hand guards and a nitrided 4140 CrMo steel barrel in a medium taper profile.
| Width | 15.7000 |
|---|---|
| Height | 3.4500 |
| Length | 31.6000 |
| Caliber | 556x45mm |
| Closeout | YES |
| Dimension | 3.45 X 15.70 X 31.60 |
| Barrel Finish | MATTE BLACK |
| Rate Of Twist | 1:7" |
| Ar15 Accessory | Y |
| Other Features | CMMG RKM11 KEYMOD FREE FLOAT HANDGUARD, MEDIUM WEIGHT TAPER BARREL, COMPLETE UPPER-INCLUDES BCG AND CHARGING HANDLE. |
| Barrel Material | STEEL |
| Other Features2 | ALUMINUM UPPER RECEIVER |
| Barrel Length In Inches | 16 |