New HWK XL Suppressor-Ready Handguard | Check it out

CMMG MKGS AR-15 Barrel & Radial Delayed BCG Kit – 8″ – 9MM – Straight Profile

Be the first to review

SKU: 99D517A  |  UPC: 815835019802

Out of Stock
We'll special order for you! Allow 3-5 days to Ship
Backed by the CMMG Warranty!
Only 1 remaining. Order now!
TOP ADD-ON'S
Real Avid Bore Boss - Ultra-Compact Bore Cleaning System

Real Avid Bore Boss for 9mm Carbines

$12.99

Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance

The CMMG MKGS Barrel and BCG Kit will allow you to build a Pistol Caliber Carbine using a Patent Pending Radial Delayed Blowback System. Unlike typical direct blowback systems, the RDB uses a bolt that is forced to rotate and unlock, slowing the BCG. This results in a lighter BCG for a lighter rifle, and less felt recoil than a straight blowback system.

The MKGS Barrel and Bolt Kits are designed to work exclusively with MKG Lowers, and a mil-spec upper receiver with an enlarged ejection port.

Specifications:

  • 8″ Medium Taper
  • 1:10 Twist
  • 4140 Chrome Moly
  • Salt Bath Nitride Finish inside and out
  • 9×19 NATO Chamber
  • Threaded 1/2-28
  • Radial Delayed Blowback Bolt (Patent Pending)
  • Requires enlarged ejection port for reliable operation.
  • Weight: 1.7lbs

NOTE:

  • Other manufacturers’ receivers may work, but we cannot guarantee function or reliability.

Specifications:

Caliber9x19mm Parabellum
Barrel Length8 inches
Barrel Twist Rate1:10 inches
Barrel Material4140 CMV
Muzzle Threads1/2/2028
Barrel FinishBlack Nitride
Gas Block SizeBlowback Gas System – No Gas Block
FitAR-15
Barrel ProfileMedium
Barrel Gas SystemBlowback
Barrel ExtensionM4
Weight27.2 ounces

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

CMMG Warranty

Seller warrants to Buyer that for a period of 6 months from the Delivery Date, all Goods will be:

  • Free from any defects in workmanship, material, and design
  • Conform to applicable specifications[, drawings, designs, samples and other requirements specified by Buyer]
  • Fit for their intended purpose and operate as intended
  • Merchantable
  • Free and clear of all liens, security interests or other encumbrances
  • Not infringe or misappropriate any third party’s patent or other intellectual property rights.

Inspection and Rejection of Nonconforming Goods

The Buyer has the right to inspect the Goods for a period of thirty (30) days after the Delivery Date. Buyer, at its sole option, may inspect all or a sample of the Goods and may reject all or any portion of the Goods if it determines the Goods are non-conforming or defective.

If Buyer rejects any portion of the Goods, Buyer has the right, effective upon written notice to Seller, to:

  • Rescind the Order in its entirety
  • Accept the Goods at a reasonably reduced price
  • Reject the Goods and require replacement of the rejected Goods.

NOTES:

If Buyer requires replacement of the Goods, Seller shall, at its expense, promptly/within 30 days replace the nonconforming Goods and pay for all related expenses, including, but not limited to, transportation charges for the return of the defective goods and the delivery of replacement Goods.

If Seller fails to timely deliver replacement Goods, Buyer may replace them with goods from a third party and charge Seller the cost thereof and terminate this Order for cause pursuant to Section 20.

Any inspection or other action by Buyer under this Section shall not reduce or otherwise affect Seller’s obligations under the Order, and Buyer shall have the right to conduct further inspections after Seller has carried out its remedial actions.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Leave your review
Rating

Customers who viewed this item also viewed these products

CMMG 5 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 - 9MM - AT3 Tactical

CMMG MKGS AR-9 Barrel & Radial Delayed BCG Kit -...

$429.99
Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance The CMMG MKGS Barrel
CMMG 16.1 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 - 9MM - AT3 Tactical

CMMG MKGS AR-9 Barrel - 16.1" - 9MM - Radial...

(1)
$484.99
Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance The CMMG MKGS Barrel
AT3 Tactical 10.5 Inch 9mm Complete AR-15 Upper Assembly - No BCG or Charging Handle copy

AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5...

(3)
$315.99
AT3 10.5″ 9mm Complete Upper AT3 Complete Upper assemblies are Built for Accuracy and
KynSHOT Hydraulic Buffer for Over gassed AR-15/CMMG Radial Delayed PCC

KynSHOT Hydraulic Buffer for Over Gassed AR-15 or CMMG Radial...

Reduce Recoil In Your AR-15 The KynSHOT RB5000HP Recoil Buffer is a hydraulic buffer
MXM47839

Maxim Defense Roller Delayed Blowback Buffer For AR-9

(1)
$170.96
Roller-Delayed for Increased Reliability and Less Felt Recoil The Maxim Defense Roller Delayed Buffer

Ballistic Advantage AR-15 Barrel - 5.5" - 9MM - Straight...

$99.75
PDW Length 9mm Barrel for AR-15 For a personal defense weapon, a compact barrel

Ballistic Advantage AR-9 Barrel - 8.3" - 9MM - Straight...

(2)
$109.25
Short 9mm AR Barrel for Pistol Caliber Carbines and Defense Pistols With a heavy,

AT3 Tactical AR-9 Barrel - 8.3" - 9mm - Straight...

(1)
$85.00
Precision Pistol Caliber Performance in a Compact Package Bring the versatility of 9mm to
TriggerTech Duty 2 Stage 3.5 Lb AR-9 Trigger - Curved

TriggerTech Duty 3.5lb 2-Stage AR-9 Trigger - Flat or Curved

$144.99
TriggerTech Duty Two-Stage 3.5LB AR-9 Trigger This Two-Stage AR-9 trigger has a feather-light feel
CMMG Gen 2 9mm 10 Round AR-15 Magazine

CMMG Gen II 9mm Conversion AR-15 Magazine - 10 Round

(1)
$26.99
10 Round Gen 2 CMMG 9mm Magazine The Gen II CMMG 9mm Conversion Magazine
CMMG Gen 2 9mm 33 Round AR-15 Magazine for Standard Lowers

CMMG Gen II 9mm Conversion AR-15 Magazine - 33 Round

(6)
$26.99
33 Round Gen 2 CMMG 9mm Magazine The Gen II CMMG 9mm Conversion Magazine
Angstadt Arms AR-15 9mm Buffer Kit with Spring & Spacer - 5.4 oz.

Angstadt Arms AR-15 9mm Buffer Kit with Spring & Spacer...

(1)
5.4 Ounces Buffer Kit For 9mm Carbines To Reduce Recoil This Angstadt Arms Buffer
TriggerTech Duty 3.5 Lb AR-9 Trigger - Curved

TriggerTech Duty 3.5lb Single-Stage AR-9 Trigger

$144.99
TriggerTech Duty 3.5LB AR-9 Trigger The Triggertech Duty AR-9 trigger brings all the performance

AT3 Tactical AR-15 Barrel - 7.5" - 300 Blackout -...

$105.00
7.5 Inch .300 Blackout Barrel by AT3 Tactical This 7.5-inch .300 Blackout Barrel makes
Hiperfire PDI Drop In AR-15 Trigger Kit - 2 lb Pull Weight - AT3 Tactical

Hiperfire PDI 2lb Single-Stage Drop-In AR-15 Trigger - 3 Colors...

(1)
$171.00
Hiperfire Power Drop-In Trigger with 2 Pound Pull Weight The Hiperfire PDI AR-15 trigger

Frequently purchased together

CMMG 16.1 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 - 9MM - AT3 Tactical

CMMG MKGS AR-9 Barrel - 16.1" - 9MM - Radial...

(1)
$484.99
Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance The CMMG MKGS Barrel
CMMG 5 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 - 9MM - AT3 Tactical

CMMG MKGS AR-9 Barrel & Radial Delayed BCG Kit -...

$429.99
Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance The CMMG MKGS Barrel

Spike's Dynacomp Extended Extreme Muzzle Brake - 1/2x28 - 5.56...

(4)
$80.96
The SBV1017 or the Spike’s Tactical Dynacomp Extreme is a black 5.56 muzzle device
Odin Works Atlas Compensator for .223/5.56 - 1/2x28 - AT3 Tactical

Odin Works Atlas AR-15 Compensator - 1/2x28 - 5.56 NATO

(4)
$99.00
The First Modular Muzzle Device Designed For .223/5.56 NATO Platforms The Odin Works Atlas
CMMG Gen 2 9mm 33 Round AR-15 Magazine for Standard Lowers

CMMG Gen II 9mm Conversion AR-15 Magazine - 33 Round

(6)
$26.99
33 Round Gen 2 CMMG 9mm Magazine The Gen II CMMG 9mm Conversion Magazine
ALG Defense Advanced Combat Trigger (ACT)

ALG Defense Advanced Combat (ACT) 6lb Single-Stage AR-15 Trigger

(10)
$82.95
Upgrade your AR 15 trigger without spending a fortune – the ALG Advanced Combat
Duramag AR-15 Stainless Steel 32-Round Magazine - 9mm Luger Colt Style

Duramag 9mm AR-9 Magazine - Colt Style - Stainless Steel...

(6)
$20.99
Colt Pattern 9mm Magazine For Reliable & Consistent Feeding The Duramag AR-15 Stainless Steel
Ultradyne USA Athena Linear Compensator - 1/2-28 or 5/8-24 Thread - AT3 Tactical

Ultradyne USA Athena Linear Compensator - Multiple Threads - Multiple...

(11)
$99.99
A Linear Compensator Above the Rest – Available for .223/5.56 or .308/7.62 ATHENA allows
AR-15 Extractor Spring

AT3 Tactical Extractor Spring for AR-15 Bolts

(2)
$1.19
Replacement Extractor Spring for AR-15 Bolts All springs have a limited life.  With enough

AT3 Tactical Extractor O-Ring

(1)
$1.19
Replacement or Upgrade O-Ring for AR-15 Extractor One of the smaller changes to most

AT3™ AR-15 Ejection Port / Dust Cover Assembly

(14)
$8.99
AT3 AR-15 Dust Cover Assembly Also called an AR-15 ejection port cover, the dust

AT3™ AR-15 Forward Assist

(19)
$11.99
AT3 AR-15 Forward Assist Assembly If you’re looking to complete or repair an upper,

Breek Arms Micro Warhammer AR-15 Charging Handle

(70)
$44.99
Snag Free Ambidextrous Charging Handle – Breek Micro Warhammer The Breek Arms Warhammer is

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...