Description
This product is 100% Made in the USA! Our gas tubes, gas blocks and even roll pins are all proudly manufactured in the US. All Complete uppers are headspaced prior to shipping and test fired.
Includes:
- BKF M4 Mod-0 Dry Film Lubed Assembled Upper Receiver w/ T-Marks
- BKF AR15 20″ 5.56 Govt Profile Rifle Length 4150 CMV 1/7 Twist Nitride 4150 Barrel W/ FSB, Triangle Handguard Cap and Delta Ring Assembly
- BKF Rifle Length Gas Tube Nitride
- BKF A2 Flash Hider
- *NOW FEATURING BKF 2-Piece Drop-In Quad Rail (No “Diving Board” / Pic Rail Bridge over Delta Ring)
- Product comes assembled
- No BCG or Charging Handle
Standard Upper Features:
- M4 Feedramps
- .250 takedown pin holes
- Laser engraved T-marks
- Upper is Assembled
BKF AR15 20″ 5.56 Govt Profile Rifle 4150 CMV 1/7 Twist FSB Nitride Barrel ( F-Marked ):
This 5.56 chambered 20 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. This barrel includes the front sight base (F-Marked) , handguard cap and delta ring assembly. This Triangle handguard cap is used for most retro builds.
Additional Info
| Length | 20″ |
|---|---|
| Material | 4150 Chrome Moly Vanadium |
| Profile | Government |
| Finish | QPQ |
| Gas System Length | Rifle |
| Gas Block Journal | .750″ |
| Twist Rate | 1:7 inches |
| Muzzle | 1/2×28 Threaded |
B. Kings Firearms barrels are manufactured by a Top Tier Barrel Manufacturer to our specifications. B. Kings Firearms barrels are made for combat and heavy duty use. We rate all of our Pinned Gas Block models for full auto use. We guarantee 1 MOA or better on all BKF barrels when used with match grade ammunition.
PRODUCT SKU: BKF-CUR-M16A4-20NITRIDE-556-QUAD-A2FH











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