300 BLK Complete Uppers

Ar15 300 BLK Complete Uppers – B. King’s Firearms

Showing all 46 results

Pin Gas block option (only BKF .750 Gas Blocks)
Rated 5.00 out of 5
$20.00
64 in stock
Dimpled barrel option (only BKF .750 Gas Blocks)
$20.00
74 in stock
Pin & Weld Flash hider/Brake
Rated 5.00 out of 5
$30.00
27 in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Charging Handle – Black Nitride
Rated 4.80 out of 5
$69.99
317 in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG (billet extractor) and Charging Handle – Black Nitride
$79.99
317 in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – Black Nitride
Rated 5.00 out of 5
$99.99
127 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
ADD Headspaced BKF AR15 BCG and Charging Handle – Black Nitride
Rated 4.98 out of 5
$101.64 – $129.47
in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – DLC
Rated 5.00 out of 5
$117.99
52 in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – Blue
Rated 5.00 out of 5
$117.99
54 in stock
Closeout
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – Chameleon
Rated 5.00 out of 5
$117.99
16 in stock
Closeout
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – Chrome Lined Phosphate
Rated 5.00 out of 5
$119.99
127 in stock
Closeout
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 BCG and Ambi Charging Handle – Nickel Boron
Rated 5.00 out of 5
$127.99
62 in stock
Closeout
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 8″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 7″ Slim M-LOK Rail
Rated 5.00 out of 5
$209.99
56 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 9″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 7″ Slim M-LOK Rail
Rated 5.00 out of 5
$253.58
10 in stock
BF 20% off in cart
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 10.5″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 9.875″ Slim M-LOK Rail
$254.00
21 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 16″ 300 Blackout t 1/7 Twist Pistol Length Barrel W/ 13.7″ Breek RG2 M-LOK Rail
Rated 5.00 out of 5
$258.09
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 16″ 300 Blackout 1/7 Twist Pistol Length Barrel W/ 13.5″ Slim M-LOK Rail
Rated 5.00 out of 5
$274.63
14 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 BLK Pistol length 1/7 Twist Barrel w/ 7.25″ Hybrid M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$282.32
135 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 16″ 300 Blackout 1/7 Twist Pistol Length Barrel W/ 15″ Slim M-LOK Rail
Rated 5.00 out of 5
$285.85
14 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 6″ 300 BLK Pistol length 1/7 Twist Barrel w/ 7.25″ Hybrid M-LOK Rail W/ KAK Flash Can
Rated 4.80 out of 5
$289.75
74 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 6″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 7″ Slim M-LOK Rail
Rated 5.00 out of 5
$290.85
74 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 10.5″ 300 BLK Pistol length 1/7 Twist Barrel W/ 9.875″ FFSSR M-LOK Handguard
Rated 5.00 out of 5
$292.06
21 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 8″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 9.875″ Slim M-LOK Rail
$295.22
56 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 9″ 300 BLK 1/7 Twist Pistol Length Barrel W/ 9.875″ Slim M-LOK Rail
Rated 5.00 out of 5
$295.29
10 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10.5″ 300 BLK Pistol length 1/7 Twist Barrel W/ 9.875″ FFSSR M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 4.89 out of 5
$301.15
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 9″ 300 BLK Pistol length 1/7 Twist Barrel w/ 9.875″ FFSSR M-LOK Handguard W/ KAK Flash Can
Rated 5.00 out of 5
$311.76
3 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF AR15 10″ 300 BLK 1/7 Twist 4150 Barrel W/ 11.5″ FFSSR M-LOK Rail W/ KAK Flash Can
Rated 5.00 out of 5
$319.09
3 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 6″ 300 BLK Pistol length 1/7 Twist Barrel w/ 7.25″ Hybrid M-LOK Rail W/ KVP Comp (BKF W/ Pinned Gas Block)
$319.30
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 BLK Pistol Length Nitrided Barrel W/ 7″ M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$321.33
135 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 9″ 300 BLK Pistol Length Nitrided Barrel W/ 8″ M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$326.55
135 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10″ 300 BLK Pistol Length Nitrided Barrel W/ 9″ M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 4.50 out of 5
$329.84
135 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 9″ 300 BLK Pistol length 1/7 Twist Barrel w/ 9.875″ FFSSR M-LOK Handguard W/ KVP Comp (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$338.20
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 BLK Pistol length 1/7 Twist Barrel w/ 9.875″ FFSSR M-LOK Handguard W/ KVP Comp (BKF W/ Pinned Gas Block)
$338.20
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 6″ 300 BLK Pistol length 1/7 Twist Barrel w/ 5.5″ Hybrid M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$361.33
100 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 BLK Pistol Length Nitrided Barrel W/ 9″ M-LOK Handguard (BKF W/ Pinned Gas Block)
$366.92
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 6″ 300 BLK Pistol length 1/7 Twist Barrel w/ 9″ Midwest SP Handguard (Suppressor Ready)
$389.99
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-1 8″ 300 BLK Pistol Length Nitrided Barrel W/ 7″ M-LOK Handguard (BKF W/ Pinned Gas Block)
$391.11
56 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-1 9″ 300 BLK Pistol Length Nitrided Barrel W/ 8″ M-LOK Handguard (BKF W/ Pinned Gas Block)
$395.38
10 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 BLK Pistol length 1/7 Twist Barrel w/ 10.5″ Midwest SP Handguard (Suppressor Ready)
$395.48
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 8″ 300 Blackout Pistol length 1/7 Twist Barrel W/ 7.25″ Midwest Combat Quad Handguard (BKF W/ Pinned Gas Block)
$397.49
8 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-1 10″ 300 BLK Pistol Length Nitrided Barrel W/ 9″ M-LOK Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$399.57
69 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10″ 300 Blackout Pistol length 1/7 Twist Barrel W/ 9.25″ Midwest Combat Quad Handguard (BKF W/ Pinned Gas Block)
$403.47
9 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 9″ 300 BLK Pistol length 1/7 Twist Barrel w/ 12.625″ Midwest SP Handguard (Suppressor Ready)
$408.36
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10″ 300 BLK Pistol length 1/7 Twist Barrel w/ 15″ Midwest SP Handguard (Suppressor Ready)
$428.31
Out of stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10″ 300 BLK Pistol Length Nitrided Barrel W/ 9.3″ Geissele MK8 Handguard (BKF W/ Pinned Gas Block)
Rated 5.00 out of 5
$542.94
3 in stock
BF 20% off in cart
10% off (Monthly and Holiday Discounts)

10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 10″ 300 BLK Pistol Length Nitrided Barrel W/ 9.3″ Geissele MK4 Handguard (BKF W/ Pinned Gas Block)
$542.94
Out of stock