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CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated 55D210C

CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated
CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated
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CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated

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Questions & Answers

Product Discontinued by Manufacturer

CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated 55D210C has been discontinued by CMMG 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, Rifle Barrels, AR15 Barrels yourself to try and find the perfect replacement for you!

Product Info for CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated 55D210C

4150 Chrome moly Vanadium material Government profile threaded barrel sub-assembly. 1/2-28 threads. Maganese phosphate coated and chrome lined. 1:7 inch twist. Rifle length gas port. .750 inch gas journal. Chambered for 5.56x45mm NATO.image

Specifications for CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated 55D210C:

Mfg Item Num:  55D210C
Type:  BARRELS - RIFLE
Barrel Length:  20
Caliber:  5.56mm NATO
Finish:  Phosphate
Master Model Header:  MK4 GP 4150CM 5.56 NATO Threaded Barrel Sub-Assembly

Ammunition

1–38 / 38
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On Sale
PMC Ammunition X-TAC Light Armor Piercing 5.56x45mm NATO 62 Grain Brass Cased Centerfire Rifle Ammunition
PMC Ammunition X-TAC Light Armor Piercing 5.56x45mm NATO 62 Grain Brass Cased Centerfire Rifle Ammunition
(103)
As Low As (Save Up to 26%)
$11.29
$0.52 - $0.56/Round
See all 2 models
Best Rated
Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition
Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition
(25)
As Low As (Save Up to 32%)
$14.09
$0.70 - $0.98/Round
See all 2 models
Blazin' Deal
Hornady Frontier 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition
Hornady Frontier 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition
(41)
As Low As (Save Up to 33%)
$13.09
$0.52 - $0.65/Round
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15% Coupon
Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition
Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition
(19)
As Low As (Save Up to 29%)
$21.09
$1.05 - $1.17/Round
See all 2 models
Best Rated
Hornady BLACK 5.56x45mm NATO 62 grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81263
Hornady BLACK 5.56x45mm NATO 62 grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81263
(7)
List: $24.99 (Save 27%)
$18.19
$0.91/Round
Blazin' Deal
Aguila Ammunition 5.56x45mm NATO Ammo 55 Grain Full Metal Jacket Brass Cased Rifle Ammunition
Aguila Ammunition 5.56x45mm NATO Ammo 55 Grain Full Metal Jacket Brass Cased Rifle Ammunition
(3)
As Low As (Save Up to 33%)
$17.99
$0.44 - $0.60/Round
See all 2 models
Best Rated
Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 70 Grain, 20 - Rounds, *31191
Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 70 Grain, 20 - Rounds, *31191
(14)
List: $37.79 (Save 13%)
$32.89
$1.64/Round
Freedom Munitions 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition
Freedom Munitions 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition
As Low As (Save Up to 24%)
$25.49
$0.51 - $0.58/Round
See all 2 models
Best Rated
Hornady Superformance 5.56x45mm NATO 75 grain Boat-Tail Hollow Point Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81264
Hornady Superformance 5.56x45mm NATO 75 grain Boat-Tail Hollow Point Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81264
(8)
List: $33.39 (Save 24%)
$25.49
$1.27/Round
Hornady Frontier 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Rifle Ammunition
Hornady Frontier 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Rifle Ammunition
(2)
As Low As (Save Up to 19%)
$14.69
$0.70 - $0.73/Round
See all 2 models
PMC 556M55BP Battle Pack 5.56 NATO 62 Gr Light Armor Piercing LAP
PMC 556M55BP Battle Pack 5.56 NATO 62 Gr Light Armor Piercing LAP
List: $89.00 (Save 12%)
$78.59
$0.65/Round
Best Rated
Hornady Frontier 5.56x45mm NATO 68 grain Boat-Tail Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, FR310
Hornady Frontier 5.56x45mm NATO 68 grain Boat-Tail Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, FR310
(12)
List: $18.89 (Save 31%)
$13.09
$0.65/Round
Best Rated
Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 62 Grain, 20 - Rounds, *31190
Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 62 Grain, 20 - Rounds, *31190
(10)
List: $37.79 (Save 16%)
$31.89
$1.59/Round
PPU PPRM5561M 5.56X45 55 FMJBT RNGMSTR
PPU PPRM5561M 5.56X45 55 FMJBT RNGMSTR
List: $830.99 (Save 26%)
$614.29
$0.61/Round
Final Sale
Ammo, Inc. 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 200 Round, Box, 556055FMJ-A200
Ammo, Inc. 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 200 Round, Box, 556055FMJ-A200
(1)
List: $147.62 (Save 21%)
$117.29
$0.59/Round
G9 Defense 5.56mm 54 Grain Barrier Blind Hollow Point Brass Cased Pistol Ammo, 20 Rounds, B-556-54A
G9 Defense 5.56mm 54 Grain Barrier Blind Hollow Point Brass Cased Pistol Ammo, 20 Rounds, B-556-54A
(2)
List: $38.99 (Save 13%)
$33.99
$1.70/Round
PMC 556XBP Battle Pack 5.56 NATO 55 Gr Full Metal Jacket Boat Tail FMJBT
PMC 556XBP Battle Pack 5.56 NATO 55 Gr Full Metal Jacket Boat Tail FMJBT
List: $144.00 (Save 10%)
$129.59
$0.65/Round
Fort Scott Munitions 5.56 NATO Copper 62 Grain Centerfire Rifle Ammo, 20 Rounds, 556-062-SCV1
Fort Scott Munitions 5.56 NATO Copper 62 Grain Centerfire Rifle Ammo, 20 Rounds, 556-062-SCV1
(2)
List: $28.41 (Save 15%)
$24.09
$1.20/Round
Hornady Superfomance 5.56 Nato 55 Grain Copper Solid CX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 812544
Hornady Superfomance 5.56 Nato 55 Grain Copper Solid CX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 812544
(3)
List: $37.99 (Save 21%)
$29.89
$1.49/Round
Fort Scott Munitions .5.56 NATO 40 Grain CNC Machined Copper Brass Rifle Ammo, 20 Rounds, 556-040-SCV
Fort Scott Munitions .5.56 NATO 40 Grain CNC Machined Copper Brass Rifle Ammo, 20 Rounds, 556-040-SCV
List: $28.06 (Save 16%)
$23.49
$1.17/Round
Best Rated
Winchester USA 5.56x45mm NATO 55 Grain Full Metal Jacket Centerfire Rifle Ammo, 125 Rounds, USA193125
Winchester USA 5.56x45mm NATO 55 Grain Full Metal Jacket Centerfire Rifle Ammo, 125 Rounds, USA193125
(19)
Price After Rebate
$63.49
$0.60/Round
Fort Scott Munitions .5.56 NATO 70 Grain CNC Machined Copper Brass Rifle Ammo, 20 Rounds, 556-070-SCV
Fort Scott Munitions .5.56 NATO 70 Grain CNC Machined Copper Brass Rifle Ammo, 20 Rounds, 556-070-SCV
List: $28.71 (Save $2.12)
$26.59
$1.33/Round
First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 1000 Rounds, 50009
First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 1000 Rounds, 50009
(1)
List: $525.00 (Save $27.31)
$497.69
$0.50/Round
Fort Scott Munitions, 5.56x45mm NATO, 55 grain, Copper Solid, Brass, Centerfire Rifle Ammo, 20, 556-055-SCV
Fort Scott Munitions, 5.56x45mm NATO, 55 grain, Copper Solid, Brass, Centerfire Rifle Ammo, 20, 556-055-SCV
List: $28.32 (Save 16%)
$23.79
$1.19/Round
Barnes Precision Match 5.56x45mm NATO 85 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammo, 20 Rounds, *30848
Barnes Precision Match 5.56x45mm NATO 85 grain Match Burner Open Tip Match Boat Tail Centerfire Rifle Ammo, 20 Rounds, *30848
(4)
List: $37.79 (Save 16%)
$31.89
$1.59/Round
First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 20 Rounds, 556 55 loaded
First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 20 Rounds, 556 55 loaded
(1)
List: $18.49 (Save 37%)
$11.69
$0.58/Round
Best Rated
PMC Ammunition X-TAC, 5.56x45mm NATO, 55 grain, Full Metal Jacket, Brass, Centerfire Rifle Ammo, 20, 556X
PMC Ammunition X-TAC, 5.56x45mm NATO, 55 grain, Full Metal Jacket, Brass, Centerfire Rifle Ammo, 20, 556X
(63)
List: $15.99 (Save 32%)
$10.89
$0.54/Round
Armscor Precision Inc .223 Remington/5.56x45mm NATO Blank Brass Cased Rifle Ammo, 20 Rounds, 50172PH-20RD
Armscor Precision Inc .223 Remington/5.56x45mm NATO Blank Brass Cased Rifle Ammo, 20 Rounds, 50172PH-20RD
(1)
List: $12.99 (Save 12%)
$11.39
$0.57/Round
Veteran Ammo Defense 5.56x45mm NATO 62 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-556-24
Veteran Ammo Defense 5.56x45mm NATO 62 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-556-24
List: $49.99 (Save 24%)
$37.79
$1.89/Round
PPU 5.56x45mm NATO 0 grain Brass Cased Blank Ammo, 20 Rounds, PPB556
PPU 5.56x45mm NATO 0 grain Brass Cased Blank Ammo, 20 Rounds, PPB556
List: $22.49 (Save 33%)
$15.09
$0.75/Round
Best Rated
Winchester USA 5.56x45mm NATO 62 grain Green Tip M855 Full Metal Jacket Boat Tail FMJBT Brass Centerfire Rifle Ammunition
Winchester USA 5.56x45mm NATO 62 grain Green Tip M855 Full Metal Jacket Boat Tail FMJBT Brass Centerfire Rifle Ammunition
(132)
Price After Rebate As Low As
$10.62
$0.53 - $0.55/Round
See all 6 models
Veteran Ammo Defense 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Pistol Ammo, 20 Rounds, HMBX-556-25
Veteran Ammo Defense 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Pistol Ammo, 20 Rounds, HMBX-556-25
List: $49.99 (Save 23%)
$38.49
$1.92/Round
Best Rated
Winchester USA 5.56x45mm NATO 55 grain Ball (M193) Full Metal Jacket Brass Centerfire Rifle Ammunition
Winchester USA 5.56x45mm NATO 55 grain Ball (M193) Full Metal Jacket Brass Centerfire Rifle Ammunition
(147)
Price After Rebate As Low As
$10.20
$0.51 - $0.57/Round
See all 7 models
Magtech 5.56X45 M193 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 556A
Magtech 5.56X45 M193 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 50 Rounds, 556A
(1)
List: $32.63
$32.39
$0.65/Round
Best Rated
Winchester USA Valor, 5.56mm, 62 grain, Full Metal Jacket, Green Tip, Brass, Centerfire Rifle Ammo, 125, USA855125
Winchester USA Valor, 5.56mm, 62 grain, Full Metal Jacket, Green Tip, Brass, Centerfire Rifle Ammo, 125, USA855125
(24)
Price After Rebate
$63.49
$0.60/Round
Winchester Lake City 5.56 MM M855 FMJ WIN 62 GR 50 Green Tip 50-20RD Box 1000 rds tot, WM855K Case
Winchester Lake City 5.56 MM M855 FMJ WIN 62 GR 50 Green Tip 50-20RD Box 1000 rds tot, WM855K Case
List: $779.99 (Save $63.80)
$716.19
$0.72/Round
Fiocchi Shooting Dynamics Rifle Ammo 5.56mm NATO 55 gr FMJ 3240 fps 1000/ct Case, 556M193LC
Fiocchi Shooting Dynamics Rifle Ammo 5.56mm NATO 55 gr FMJ 3240 fps 1000/ct Case, 556M193LC
List: $689.99 (Save 12%)
$608.99
$0.61/Round
PMC Ammunition X-Tac Rifle Ammo 5.56x45mm 55 gr FMJBT 3120 fps 1000/Box, 5.56X Case
PMC Ammunition X-Tac Rifle Ammo 5.56x45mm 55 gr FMJBT 3120 fps 1000/Box, 5.56X Case
List: $683.99 (Save 13%)
$597.59
$0.60/Round
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Ammo Boxes

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MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS
MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS
(2)
List: $37.97 (Save $3.18)
$34.79
Next

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CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated 55D210C Unavailable & Discontinued Models

List of Unorderable Models

  • CMMG, Inc MK4 GP 4150CM Chrome-Lined Barrel 5.56x45mm NATO 20 Inch Government Profile Threaded 1/2-28 Maganese Phosphate Coated , MPN: 55D210C , UPC: 815835016801 , Code: 2CM-ATB-55D210C
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