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CMMG, Inc 300 AAC Blackout Mk4 Upper Receiver Group

CMMG, Inc Upper Group, Mk4 K, 300 BLK 30B8A67
CMMG, Inc Upper Group, Mk4 T, 300 BLK 30BC353
CMMG, Inc Upper Group, Mk4 RCE, 300 BLK 30BC3A7
CMMG, Inc Upper Group, Mk4 HT, 300 BLK, SBN 30B442D
CMMG, Inc Upper Group, Mk4 HT, 300 BLK 30B2C4E
CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274
CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274
CMMG, Inc Upper Group, Mk4 K, 300 BLK 30B8A67
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CMMG, Inc Upper Group, Mk4 K, 300 BLK 30B8A67
CMMG, Inc Upper Group, Mk4 T, 300 BLK 30BC353
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CMMG, Inc Upper Group, Mk4 T, 300 BLK 30BC353
CMMG, Inc Upper Group, Mk4 RCE, 300 BLK 30BC3A7
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CMMG, Inc Upper Group, Mk4 RCE, 300 BLK 30BC3A7
CMMG, Inc Upper Group, Mk4 HT, 300 BLK, SBN 30B442D
4 of 7 images
CMMG, Inc Upper Group, Mk4 HT, 300 BLK, SBN 30B442D
CMMG, Inc Upper Group, Mk4 HT, 300 BLK 30B2C4E
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CMMG, Inc Upper Group, Mk4 HT, 300 BLK 30B2C4E
CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274
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CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274
CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274
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CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274

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Questions & Answers
Caliber:
.300 AAC Blackout

Code: 2CM-UFH-300AAAC-30B8A67

MPN: 30B8A67

UPC: 815835016016

Product No Longer Available

Product Info for CMMG, Inc 300 AAC Blackout Mk4 Upper Receiver Group

When modularity, affordability, and quality are all important the Mk4 T is the rifle of choice. The Mk4 introduces CMMG's RKM series of KeyMod free float hand guards. Either a 416 stainless or nitrided 4140 CrMo steel barrel in a medium taper profile are offered for both 5.56mm and 300 BLK. The 22LR and 9mm models feature a nitrided 4140 CrMo M4 profile barrel.image

Specifications for CMMG, Inc 300 AAC Blackout Mk4 Upper Receiver Group:

Caliber: 300 Blackout
Barrel: 16.1", 1;7 twist, medium taper, 416SS, bead blasted finish
Muzzle: A2 comp., threaded 5/8-24
Hand Guard: CMMG RKM11 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type upper
Trigger: Single stage mil-spec style trigger
Weight: 6.3 lbs (unloaded)
Length: 32” (stock collapsed)
Gas Port Location: Carbine

Package Contents:

  • CMMG, Inc 300 AAC Blackout Mk4 Upper Receiver Group

Ammunition

1–39 / 39
Previous
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
(15)
List: $34.99 (Save 48%)
$18.19
$0.91/Round
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%)
$57.89
$0.98 - $1.16/Round
See all 2 models
8% 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 26%)
$42.99
$0.77 - $0.86/Round
See all 2 models
Best Rated
Hornady Subsonic .300 AAC Blackout 190 grain Subsonic eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80877
Hornady Subsonic .300 AAC Blackout 190 grain Subsonic eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80877
(24)
List: $44.80 (Save 21%)
$35.59
$1.78/Round
15% 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
(5)
As Low As (Save Up to 29%)
$22.99
$1.15 - $1.28/Round
See all 3 models
6% Coupon
Remington .300 AAC Blackout 150 Grains Full Metal Jacketed Brass Cased Centerfire Rifle Ammunition
Remington .300 AAC Blackout 150 Grains Full Metal Jacketed Brass Cased Centerfire Rifle Ammunition
(2)
As Low As (Save Up to 11%)
$29.79
$1.47 - $1.49/Round
See all 2 models
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 16%)
$37.09
$1.85 - $2.13/Round
See all 2 models
Best Rated
Hornady BLACK .300 AAC Blackout 110 grain V-MAX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80873
Hornady BLACK .300 AAC Blackout 110 grain V-MAX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80873
(10)
List: $42.47 (Save 29%)
$29.99
$1.50/Round
Remington .300 AAC Blackout UMC 150 Grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 200 Rounds, 20107
Remington .300 AAC Blackout UMC 150 Grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 200 Rounds, 20107
(1)
List: $331.99 (Save 22%)
$258.49
$1.29/Round
Hornady American Gunner .300 AAC Blackout 125 grain Hollow Point Brass Cased Centerfire Rifle Ammo, 50 Rounds, 80897
Hornady American Gunner .300 AAC Blackout 125 grain Hollow Point Brass Cased Centerfire Rifle Ammo, 50 Rounds, 80897
List: $95.35 (Save 30%)
$66.99
$1.34/Round
Hornady Frontier 300 Blackout 208 Grain FMJ Brass Cased Rifle Ammo, 20 Rounds, FR410
Hornady Frontier 300 Blackout 208 Grain FMJ Brass Cased Rifle Ammo, 20 Rounds, FR410
List: $36.25 (Save 23%)
$27.99
$1.40/Round
Sellier & Bellot .300 Aac Blackout Fmj - SB300BLKACS
Sellier & Bellot .300 Aac Blackout Fmj - SB300BLKACS
List: $1,132.00 (Save 27%)
$821.09
$0.82/Round
Federal Premium Power-Shok Copper .300 AAC Blackout 120 Grain Copper Hollow Point Centerfire Rifle Ammo, 20 Rounds, 300BLK120LFA
Federal Premium Power-Shok Copper .300 AAC Blackout 120 Grain Copper Hollow Point Centerfire Rifle Ammo, 20 Rounds, 300BLK120LFA
List: $47.99 (Save 29%)
$33.89
$1.69/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
$34.29
$1.71/Round
Federal Fusion MSR .300 AAC Blackout 150 Grain Soft Point Centerfire Rifle Ammo, 20 Rounds, F300BMSR2
Federal Fusion MSR .300 AAC Blackout 150 Grain Soft Point Centerfire Rifle Ammo, 20 Rounds, F300BMSR2
(2)
List: $42.99 (Save 24%)
$32.69
$1.63/Round
Best Rated
Federal Premium American Eagle Rifle 300 Blackout 150 Grain Full Metal Jacket Boat Tail Brass Cased Centerfire Rifle Ammo, 20 Rounds, AE300BLK1
Federal Premium American Eagle Rifle 300 Blackout 150 Grain Full Metal Jacket Boat Tail Brass Cased Centerfire Rifle Ammo, 20 Rounds, AE300BLK1
(7)
List: $32.99 (Save 23%)
$25.39
$1.27/Round
Best Rated
SIG SAUER Elite Hunting Solid Copper .300 AAC Blackout 120 grain Open Tip Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, E300H1-20
SIG SAUER Elite Hunting Solid Copper .300 AAC Blackout 120 grain Open Tip Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, E300H1-20
(12)
List: $37.95 (Save $2.96)
$34.99
$1.75/Round
Magtech 300 Blackout 123 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 300BLKB
Magtech 300 Blackout 123 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 300BLKB
(1)
List: $46.29 (Save 10%)
$41.89
$0.84/Round
Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Centerfire Rifle Ammo, 20 Rounds, 300BLKB
Federal Premium Power-Shok .300 AAC Blackout 150 Grain Soft Point Centerfire Rifle Ammo, 20 Rounds, 300BLKB
List: $40.99 (Save 27%)
$30.09
$1.50/Round
Underwood Ammo .300 AAC Blackout 125 Grain Polymer Tipped Spitzer Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 418
Underwood Ammo .300 AAC Blackout 125 Grain Polymer Tipped Spitzer Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, 418
List: $53.81 (Save 33%)
$35.99
$1.80/Round
Final Sale
Fort Scott Munitions .300 BlackOut 150 Grain CNC Machined Copper Brass Riffle Ammo, 20 Rounds, 300-150-SCV
Fort Scott Munitions .300 BlackOut 150 Grain CNC Machined Copper Brass Riffle Ammo, 20 Rounds, 300-150-SCV
List: $37.32 (Save 17%)
$30.79
$1.54/Round
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 34%)
$33.39
$1.67/Round
Nosler .300 AAC Blackout, Ballistic Tip , 125 grain, Brass Cased, 20 Rounds, 61032
Nosler .300 AAC Blackout, Ballistic Tip , 125 grain, Brass Cased, 20 Rounds, 61032
List: $48.95 (Save 25%)
$36.89
$1.84/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
Barnes Precision Match .300 AAC Blackout 220 grain Jacketed Hollow Point Brass Cased Rifle Ammo, 20 Rounds, 32134
Barnes Precision Match .300 AAC Blackout 220 grain Jacketed Hollow Point Brass Cased Rifle Ammo, 20 Rounds, 32134
List: $45.99 (Save 13%)
$39.79
$1.99/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
(6)
List: $48.99 (Save 16%)
$41.09
$2.05/Round
Hornady Custom .300 AAC Blackout 135 grain Flex Tip eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80881
Hornady Custom .300 AAC Blackout 135 grain Flex Tip eXpanding Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80881
(3)
List: $49.53 (Save 21%)
$39.29
$1.96/Round
Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition
Freedom Munitions .300 Blackout 147 Grain Full Metal Jacket Brass Rifle Ammunition
(2)
As Low As (Save 12%)
$32.99
$0.65 - $0.66/Round
See all 3 models
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 23%)
$41.29
$2.06/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 19%)
$48.89
$2.44/Round
Best Rated
Hornady BLACK .300 AAC Blackout 208 grain A-MAX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80891
Hornady BLACK .300 AAC Blackout 208 grain A-MAX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 80891
(7)
List: $42.92 (Save 21%)
$33.99
$1.70/Round
10% 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
(2)
As Low As (Save 12%)
$33.49
$0.66 - $0.67/Round
See all 3 models
Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammunition
Remington .300 AAC Blackout UMC 220 Grain Open Tip Flat Base Brass Cased Centerfire Rifle Ammunition
(3)
As Low As (Save 10%)
$279.29
$1.75/Round
See all 2 models
Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition
Remington UMC Rifle .300 AAC Blackout 220 Grain Open Tip Flat Base Centerfire Rifle Ammunition
(1)
As Low As (Save 11%)
$34.89
$1.74 - $1.75/Round
See all 2 models
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
(3)
List: $28.65 (Save 25%)
$21.39
$1.07/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: $27.99
$27.19
$1.36/Round
Liberty Ammunition OverWatch .300 AAC Blackout 96 grain Open Cavity Design Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, LA-OW300-96-2500
Liberty Ammunition OverWatch .300 AAC Blackout 96 grain Open Cavity Design Nickel Plated Brass Cased Rifle Ammo, 20 Rounds, LA-OW300-96-2500
List: $51.99 (Save $3.00)
$48.99
$2.45/Round
Sellier & Bellot 300 Blackout 147 Grain Full Metal Jacket Rifle Ammo, 20 Rounds, SB300BLKB
Sellier & Bellot 300 Blackout 147 Grain Full Metal Jacket Rifle Ammo, 20 Rounds, SB300BLKB
(3)
List: $20.18 (Save 17%)
$16.79
$0.84/Round
Best Rated
SIG SAUER SBR Solid Copper .300 AAC Blackout 120 grain Hunting Tipped Brass Cased Centerfire Rifle Ammo, 20 Rounds, E300H1-SBR-20
SIG SAUER SBR Solid Copper .300 AAC Blackout 120 grain Hunting Tipped Brass Cased Centerfire Rifle Ammo, 20 Rounds, E300H1-SBR-20
(6)
List: $39.99 (Save $1.80)
$38.19
$1.91/Round
Next

Ammo Boxes

1–3 / 3
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: $17.89 (Save 22%)
$13.99
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: $59.99 (Save 25%)
$45.19
$0.90/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: $57.99 (Save 25%)
$43.39
$0.87/Round
Next

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CMMG, Inc 300 AAC Blackout Mk4 Upper Receiver Group Unavailable & Discontinued Models

List of Unorderable Models

  • CMMG, Inc Upper Group, Mk4 K, 300 BLK 30B8A67 , MPN: 30B8A67 , UPC: 815835016016 , Code: 2CM-UFH-300AAAC-30B8A67
  • CMMG, Inc Upper Group, Mk4 T, 300 BLK 30BC353 , MPN: 30BC353 , UPC: 815835015989 , Code: 2CM-UFH-300AAAC-30BC353
  • CMMG, Inc Upper Group, Mk4 RCE, 300 BLK 30BC3A7 , MPN: 30BC3A7 , UPC: 815835016627 , Code: 2CM-UFH-300AAAC-30BC3A7
  • CMMG, Inc Upper Group, Mk4 HT, 300 BLK, SBN 30B442D , MPN: 30B442D , UPC: 815835015996 , Code: 2CM-UFH-300AAAC-30B442D
  • CMMG, Inc Upper Group, Mk4 HT, 300 BLK 30B2C4E , MPN: 30B2C4E , UPC: 815835016009 , Code: 2CM-UFH-300AAAC-30B2C4E
  • CMMG, Inc Upper Group,MK4 RCE,300 BLK,SBN 30B1274 , MPN: 30B1274 , UPC: 815835017525 , Code: 2CM-UFH-300AAAC-30B1274
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