CMMG Mk4 3GR 5.56mm Upper Group BLACK

We have 2 of these coming on our next shipment and can be Pre-ordered.

The Mk4 3GR Upper Group features an 18″ 416 stainless steel medium taper profile 5.56x45mm barrel. This Upper Group is equipped with CMMG’s SV muzzle brake and RKM14 KeyMod hand guard.

Caliber: 5.56mm
Barrel: 18” medium weight taper profile
Muzzle: CMMG SV brake, threaded 1/2-28
Hand Guard: CMMG RKM14 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type

Upper Group consists of:
     Upper Receiver Assembly (Upper Receiver, Ejection Port Cover, Forward Assist)
     Barrel Sub-Assembly
     Hand Guard and Barrel Nut
     Charging Handle
     Bolt Carrier Group


Write a review

Please login or register to review

CMMG Mk4 3GR 5.56mm Upper Group 18"

  • Brand: CMMG
  • Product Code: CMMG Mk4 3GR 5.56mm Upper Group 18"
  • Availability:
    Pre-Order
  • $1,499.00
  • $1,348.95
  • Ex Tax: $1,173.00

Related Products

Stag Arms Model 1, 5.56 NATO 16" UPPER HALF

Stag Arms Model 1, 5.56 NATO 16" UPPER HALF

UPPER ONLY.  The Model 1 is a flat top design made to mil-spec standards and with a rem..

$1,100.00
Ex Tax: $956.52

Stag Arms Model 3T Comp, 5.56 NATO 16"

Stag Arms Model 3T Comp, 5.56 NATO 16"

NOTE: THIS RIFLE IS IN TRANSIT AND WILL BE AVAILABLE AFTER MARCH 1.  BIG SAVINGS IF YOU PURC..

$2,205.00
$2,449.99 Ex Tax: $1,917.39

Stag Arms Lower no stock A2 or Carbine Buffer.

Stag Arms Lower no stock A2 or Carbine Buffer.

Stag Arms Lower no stock A2 or Carbine  Bufer or Carbine Buffer, Standard Stag Arms trigger...

$724.99
$750.00 Ex Tax: $630.43

Stag Arms Model 3T Comp, 5.56 NATO 20"

Stag Arms Model 3T Comp, 5.56 NATO 20"

The Model 3T 20" series provides the shooter with a rifle that is readily usable with many of today’..

$2,449.99
Ex Tax: $2,130.43

Stag Arms Model 2, 5.56 NATO 16"

Stag Arms Model 2, 5.56 NATO 16"

The Model 2 is identical to the Model 1 but with a Midwest Industries ERS flip up rear sight..

$2,159.00
$2,399.00 Ex Tax: $1,877.39

Stag Arms Model 4 UPPER ONLY 5.56 NATO 20"

Stag Arms Model 4 UPPER ONLY 5.56 NATO 20"

The Model 4 UPPER ONLY is identical to the Model 1 rifle but with a 20'' barrel. Comes with ..

$1,250.00
Ex Tax: $1,086.96

Stag Arms Model 3T Comp, 5.56 NATO 16" Desert Sand

Stag Arms Model 3T Comp, 5.56 NATO 16" Desert Sand

NOTE: THIS RIFLE IS IN TRANSIT AND WILL BE AVAILABLE AFTER MARCH 1.  BIG SAVINGS IF YOU PURCHAS..

$2,587.50
$2,875.00 Ex Tax: $2,250.00

Stag Arms Lower Stripped

Stag Arms Lower Stripped

Stag Arms Lower strippedThese have baan shipped and should be available March 1, 2017 ..

$279.94
Ex Tax: $243.43

Stag Arms Model 1, 5.56 NATO 16"

Stag Arms Model 1, 5.56 NATO 16"

The Model 1 is a flat top design made to mil-spec standards and with a removable carry handl..

$1,999.00
$2,350.00 Ex Tax: $1,738.26

Stag Arms Lower with GUNSNZ CARBINE STOCK

Stag Arms Lower with GUNSNZ CARBINE STOCK

Stag Arms Lower with a Carbine Buffer, Standard Stag Arms trigger, GUNSNZ Carbine Stock. ..

$975.00
Ex Tax: $847.83

Stag Arms Model 3T Comp, 5.56 NATO 16" BURNT BRONZE

Stag Arms Model 3T Comp, 5.56 NATO 16" BURNT BRONZE

NOTE: THIS RIFLE IS IN TRANSIT AND WILL BE AVAILABLE AFTER MARCH 1.  BIG SAVINGS IF YOU PURCHAS..

$2,587.50
$2,875.00 Ex Tax: $2,250.00

Stag Arms 16"  300AAC A2 Barrel Assy E Cat

Stag Arms 16" 300AAC A2 Barrel Assy E Cat

The 16" Barrel Assembly includes everything receeiver forward just like in the Stag Model 4. Include..

$799.00
Ex Tax: $694.78

Norinco NHM-90 5 Shot 223 AK-47

Norinco NHM-90 5 Shot 223 AK-47

Norinco NHM-90 5 Shot 223 AK-47**223 on special down from $1299!** Chinese NHM-90 223 Semi Auto..

$805.00
$1,298.35 Ex Tax: $700.00

Tags: CMMG Mk4 3GR 5.56mm Upper Group 18"