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2A Armament M-LOK 300BLK Complete Upper Receiver 2A-CU3008ML7BLK-1

2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
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2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
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2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
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2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1
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2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in 2A-CU3008ML7BLK-1

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Questions & Answers

Product Discontinued by Manufacturer

2A Armament M-LOK 300BLK Complete Upper Receiver has been discontinued by 2A Armament and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for 2A Armament M-LOK 300BLK Complete Upper Receiver

The 8in .300BLK complete upper receiver offers the end user an assembled system that is ready for lightweight needs. Each assembled upper starts with a BALIOS-lite stripper upper receiver. We then add our titanium gas block on the appropriate length barrel, and finish the assembly with our 7in BL-RAIL and titanium barrel nut. These uppers are perfect for those who are looking to do a suppressed .300BLK build. Our full mass carrier is included as well as a BCM-Mod4 charging handle.image

Package Contents:

  • 2A Armament M-LOK 300BLK Complete Upper Receiver

Ammunition

1–39 / 39
Previous
Freedom Munitions .300 Blackout 125 Grain Full Metal Jacket Brass Rifle Ammo, 50 Rounds, FM300F125N50
Freedom Munitions .300 Blackout 125 Grain Full Metal Jacket Brass Rifle Ammo, 50 Rounds, FM300F125N50
(3)
List: $37.19 (Save 19%)
$29.99
$0.60/Round
7% Coupon
Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition
Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition
(8)
As Low As (Save Up to 24%)
$28.49
$0.56 - $0.60/Round
See all 3 models
Up to 11% Coupon
Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition
Freedom Munitions .300 Blackout 150 Grain Full Metal Jacket Brass Rifle Ammunition
(4)
As Low As (Save Up to 26%)
$28.39
$0.57 - $0.61/Round
See all 3 models
Up to 14% Coupon
Hornady Frontier .300 AAC Blackout 125 Grain Full Metal Jacket Centerfire Rifle Ammunition
Hornady Frontier .300 AAC Blackout 125 Grain Full Metal Jacket Centerfire Rifle Ammunition
(6)
As Low As (Save Up to 23%)
$27.99
$1.24 - $1.41/Round
See all 3 models
7% Coupon
Super Vel Ammunition 300 Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammunition
Super Vel Ammunition 300 Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammunition
As Low As (Save Up to 21%)
$57.99
$0.97 - $1.16/Round
See all 2 models
7% Coupon
Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Rifle Ammunition
Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Rifle Ammunition
(3)
As Low As (Save Up to 28%)
$240.79
$1.46 - $1.50/Round
See all 2 models
Freedom Munitions HUSH Subsonic .300 Blackout 220 Grain HPBT Brass Rifle Ammo, 50 Rounds, FMH300H220N50
Freedom Munitions HUSH Subsonic .300 Blackout 220 Grain HPBT Brass Rifle Ammo, 50 Rounds, FMH300H220N50
(2)
List: $63.19 (Save 19%)
$50.99
$1.02/Round
7% Coupon
Super Vel Ammunition 300 Blackout 150 grain Full Metal Jacket Brass Cased Rifle Ammunition
Super Vel Ammunition 300 Blackout 150 grain Full Metal Jacket Brass Cased Rifle Ammunition
As Low As (Save Up to $3.76)
$39.49
$0.76 - $0.79/Round
See all 2 models
Newly Added
Doubletap Ammunition Colt Defense .300 AAC Blackout, 125 grain, Solid Copper, 20 Rounds Rifle Ammo, 300BLK125CT
Doubletap Ammunition Colt Defense .300 AAC Blackout, 125 grain, Solid Copper, 20 Rounds Rifle Ammo, 300BLK125CT
List: $49.99 (Save 29%)
$35.49
$1.77/Round
13% Coupon
Barnes Precision Match .300 AAC Blackout 125 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammunition
Barnes Precision Match .300 AAC Blackout 125 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammunition
(1)
As Low As (Save Up to 11%)
$41.99
$2.10/Round
See all 2 models
Best Rated
Armscor Precision Inc USA .300 AAC Blackout 147 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, FAC300AAC-1N-20RD
Armscor Precision Inc USA .300 AAC Blackout 147 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, FAC300AAC-1N-20RD
(15)
List: $23.99 (Save 40%)
$14.49
$0.72/Round
Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Rifle Ammunition
Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Rifle Ammunition
(1)
As Low As (Save Up to 10%)
$36.49
$1.82/Round
See all 2 models
Hornady Ammo Custom, .300 Blackout, 110 Grain, Centerfire Rifle Ammo, CX Polymer Tip, 20 Rounds, 808794
Hornady Ammo Custom, .300 Blackout, 110 Grain, Centerfire Rifle Ammo, CX Polymer Tip, 20 Rounds, 808794
(4)
List: $50.84 (Save 23%)
$38.99
$1.95/Round
Nosler BTA Ballistic Tip Ammunition 300 Blackout 220 Grain Ballistic Tip Round Nose Brass Cased Centerfire Rifle Ammo, 20 Rounds, 61050
Nosler BTA Ballistic Tip Ammunition 300 Blackout 220 Grain Ballistic Tip Round Nose Brass Cased Centerfire Rifle Ammo, 20 Rounds, 61050
List: $48.95 (Save 16%)
$41.19
$2.06/Round
Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Boat Tail , 120 Grain, 20 - Rounds, 30827
Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Boat Tail , 120 Grain, 20 - Rounds, 30827
(1)
List: $52.99 (Save 15%)
$45.29
$2.26/Round
SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA
SinterFire Reduced Hazard .300 AAC Blackout 110 Grain Frangible Brass Cased Rifle Ammo, 50 Rounds, SF300BLK110RHA
(3)
List: $50.69 (Save 23%)
$38.89
$0.78/Round
Wilson Combat Hornady V-MAX .300 AAC Blackout 110 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-110-VMAX-20RD
Wilson Combat Hornady V-MAX .300 AAC Blackout 110 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-110-VMAX-20RD
(1)
List: $30.95 (Save $1.96)
$28.99
$1.45/Round
On Sale
Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Rifle Ammo, 20 Rounds, 300BLKB
Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Rifle Ammo, 20 Rounds, 300BLKB
Price After Rebate
$24.64
$1.54/Round
Best Rated
Hornady BLACK .300 AAC Blackout 208 Grain ELD Brass Cased Rifle Ammo, 20 Rounds, 80891
Hornady BLACK .300 AAC Blackout 208 Grain ELD Brass Cased Rifle Ammo, 20 Rounds, 80891
(8)
List: $42.92 (Save 14%)
$36.99
$1.85/Round
Best Rated
Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Flat Base, 110 Grain, 20 - Rounds, 21548
Barnes Vor-TxRifle Cartridges, .300 AAC Blackout, TAC-TX Flat Base, 110 Grain, 20 - Rounds, 21548
(7)
List: $52.99 (Save 10%)
$47.49
$2.37/Round
Wilson Combat Hornady ELD-M .300 AAC Blackout 208 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-208-ELDM-20RD
Wilson Combat Hornady ELD-M .300 AAC Blackout 208 Grain Brass Cased Pistol Ammo, 20 Round, A300BLK-208-ELDM-20RD
List: $39.95 (Save 14%)
$34.29
$1.71/Round
SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C
SinterFire GreenLine .300 AAC Blackout 110 Grain Frangible Brass Rifle Ammo, 50 Rounds, SF300BLK110GL-C
(1)
List: $52.79 (Save 23%)
$40.59
$0.81/Round
Barnes Precision Match .300 AAC Blackout 220 Grain Jacketed Hollow Point Brass Rifle Ammo, 20 Rounds, BB300BLKM2
Barnes Precision Match .300 AAC Blackout 220 Grain Jacketed Hollow Point Brass Rifle Ammo, 20 Rounds, BB300BLKM2
(1)
List: $48.99 (Save 17%)
$40.49
$2.02/Round
On Sale
Federal Premium Power-Shok Copper .300 AAC Blackout 120 Grain Copper Hollow Point Rifle Ammo, 20 Rounds, 300BLK120LFA
Federal Premium Power-Shok Copper .300 AAC Blackout 120 Grain Copper Hollow Point Rifle Ammo, 20 Rounds, 300BLK120LFA
Price After Rebate
$27.20
$1.70/Round
Nosler Varmageddon .300 AAC Blackout 110 Grain Flat Base Tipped Brass Cased Centerfire Rifle Ammo, 20 Rounds, 40127
Nosler Varmageddon .300 AAC Blackout 110 Grain Flat Base Tipped Brass Cased Centerfire Rifle Ammo, 20 Rounds, 40127
(1)
List: $43.95 (Save 12%)
$38.89
$1.94/Round
HSM 300BLK4N Match 300 Blackout 220 Gr Hollow Point Boat Tail HPBT
HSM 300BLK4N Match 300 Blackout 220 Gr Hollow Point Boat Tail HPBT
List: $34.99
$34.69
$1.73/Round
Atomic Ammunition .300 AAC Blackout 110 Grain Jacketed Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, 00475
Atomic Ammunition .300 AAC Blackout 110 Grain Jacketed Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, 00475
List: $38.00 (Save $2.01)
$35.99
$1.80/Round
Fort Scott Munitions 300AAC BLACKOUT 190 Grain Centerfire Rifle Ammo, 20 Rounds, 300-190-SCV1SS
Fort Scott Munitions 300AAC BLACKOUT 190 Grain Centerfire Rifle Ammo, 20 Rounds, 300-190-SCV1SS
(4)
List: $67.48 (Save 39%)
$40.99
$2.05/Round
Best Rated
Barnes 300 AAC Blackout, 120 Grain, Jacketed Hollow Point/JHP, Brass Cased Centerfire Rifle Ammo, 20 Rounds, 32004
Barnes 300 AAC Blackout, 120 Grain, Jacketed Hollow Point/JHP, Brass Cased Centerfire Rifle Ammo, 20 Rounds, 32004
(6)
List: $29.99 (Save 17%)
$24.99
$1.25/Round
Best Rated
Winchester Deer Season XP .300 AAC Blackout 150 grain Extreme Point Polymer Tip Centerfire Rifle Ammo, 20 Rounds, X300BLKDS
Winchester Deer Season XP .300 AAC Blackout 150 grain Extreme Point Polymer Tip Centerfire Rifle Ammo, 20 Rounds, X300BLKDS
(14)
Price After Rebate
$19.12
$1.27/Round
Veteran Ammo Defense .300 AAC Blackout 110 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-26
Veteran Ammo Defense .300 AAC Blackout 110 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-26
List: $53.49 (Save 22%)
$41.49
$2.07/Round
Best Rated
Winchester Super Suppressed .300 AAC Blackout 200 grain Full Metal Jacket Centerfire Rifle Ammo, 20 Rounds, SUP300BLK
Winchester Super Suppressed .300 AAC Blackout 200 grain Full Metal Jacket Centerfire Rifle Ammo, 20 Rounds, SUP300BLK
(26)
List: $34.99 (Save 40%)
$20.99
$1.05/Round
Veteran Ammo Defense .300 AAC Blackout 200 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-27
Veteran Ammo Defense .300 AAC Blackout 200 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-300-27
List: $59.99 (Save 18%)
$48.99
$2.45/Round
Best Rated
Sellier & Bellot Subsonic .300 AAC Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, SB300BLKSUBA
Sellier & Bellot Subsonic .300 AAC Blackout 200 grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, SB300BLKSUBA
(14)
List: $20.46 (Save $1.47)
$18.99
$0.95/Round
Newly Added
Atomic Ammunition Subsonic .300 AAC Blackout 220 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition
Atomic Ammunition Subsonic .300 AAC Blackout 220 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition
As Low As (Save Up to 14%)
$35.00
$1.70 - $1.75/Round
See all 2 models
SIG SAUER .300 AAC Blackout 220 Grain Match Brass Cased Rifle Ammo, 20 Rounds, C300A2-20
SIG SAUER .300 AAC Blackout 220 Grain Match Brass Cased Rifle Ammo, 20 Rounds, C300A2-20
List: $32.99 (Save $3.00)
$29.99
$1.50/Round
Winchester Usa .300 AAC Blackout 147 Grain Full Metal Jacket Rifle Ammo, 125 Rounds, USA300B1472
Winchester Usa .300 AAC Blackout 147 Grain Full Metal Jacket Rifle Ammo, 125 Rounds, USA300B1472
List: $599.00 (Save 76%)
$142.49
$1.14/Round
Best Rated
Sellier & Bellot eXergy .300 AAC Blackout 110 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, SB300BLKXA
Sellier & Bellot eXergy .300 AAC Blackout 110 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, SB300BLKXA
(6)
List: $30.08 (Save 29%)
$21.49
$1.07/Round
SIG SAUER .300 AAC Blackout 194 Grain Max Expansion Brass Cased Rifle Ammo, 20 Rounds, C300D2-20
SIG SAUER .300 AAC Blackout 194 Grain Max Expansion Brass Cased Rifle Ammo, 20 Rounds, C300D2-20
List: $94.99 (Save 24%)
$71.99
$3.60/Round
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Ammo Boxes

1–1 / 1
Previous
Best Rated
MTM Ammo Can Tray for Metal Cans 30 Cal., Dark Earth, MAC30
MTM Ammo Can Tray for Metal Cans 30 Cal., Dark Earth, MAC30
(12)
List: $22.09 (Save 32%)
$14.99
Next

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2A Armament M-LOK 300BLK Complete Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • 2A Armament M-LOK 300BLK Complete Upper Receiver, Black, 8in, 2A-CU3008ML7BLK-1 , MPN: 2A-CU3008ML7BLK-1 , UPC: 854361006337 , Code: 2CU-URC-MLBLKCUR-2A-CU3008ML7BLK-1
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Last updated 2026-08-26 UTC.