MK12 MOD-H .223/5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15 – MK12 MOD-H .223/5.56 16” BBL COMPLETE UPPR RCVR BLK

Specifications

  • Cartridge: 223 Remington
  • Color: Black
  • Style: Complete
  • Make: AR-15
  • Length: 16''
  • Make/Model: AR-15
  • Finish: Cerakote
  • Muzzle: 1/2-28
PRECISION REFLEX, INC MK12 MOD-H .223/5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15
 
TheMK12 Mod H upper is 16.5” barreled upper with capable MOA accuracy. The flat top receiver has a Gas Buster® charging handle with military big latch, Pri rifle length black finished forearm, recce top rail that connects to the forearm rail. The upper also comes with a bolt carrier group, PRi's rail mounted flip up front and rear sights and AE brake and collar. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes.
 
All uppers are assembled cleaned and tested before shipping. Please allow 5~10 days for assembly and testing before ship date. Barrels are Douglas 416 stainless steel with 1-8 twist with M4 feed ramps.
 
SPECS
  • Caliber: 5.56 / .223
  • Upper Receiver: Forged T6 7075 Hard Coat Anodized Aluminum
  • Barrel: 16” 5.56 Douglas 416 Stainless Steel with M4 Feed Ramps, 1:7 Twist
  • Gas Block: Low Profile Gas Block with 2 Set Screws for Securing
  • Forearm: Rifle Length
  • Rails: All Rails Plus Recce Top Rail
  • BUIS: Front and Rear Rail Mount Sights
  • Muzzle Brake: 1/2 x 28 Threaded AE Brake and Collar
  • Overall Length: 25 Inches
  • Overall Weight: 5.7 Pounds
Description

Original price was: $1,582.00.Current price is: $1,421.35.

PRECISION REFLEX, INC MK12 MOD-H .223/5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15
 
TheMK12 Mod H upper is 16.5” barreled upper with capable MOA accuracy. The flat top receiver has a Gas Buster® charging handle with military big latch, Pri rifle length black finished forearm, recce top rail that connects to the forearm rail. The upper also comes with a bolt carrier group, PRi's rail mounted flip up front and rear sights and AE brake and collar. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes.
 
All uppers are assembled cleaned and tested before shipping. Please allow 5~10 days for assembly and testing before ship date. Barrels are Douglas 416 stainless steel with 1-8 twist with M4 feed ramps.
 
SPECS
  • Caliber: 5.56 / .223
  • Upper Receiver: Forged T6 7075 Hard Coat Anodized Aluminum
  • Barrel: 16” 5.56 Douglas 416 Stainless Steel with M4 Feed Ramps, 1:7 Twist
  • Gas Block: Low Profile Gas Block with 2 Set Screws for Securing
  • Forearm: Rifle Length
  • Rails: All Rails Plus Recce Top Rail
  • BUIS: Front and Rear Rail Mount Sights
  • Muzzle Brake: 1/2 x 28 Threaded AE Brake and Collar
  • Overall Length: 25 Inches
  • Overall Weight: 5.7 Pounds

Out of stock

SKU 430115650 Category

Description

PRECISION REFLEX, INC MK12 MOD-H .223/5.56 NATO COMPLETE UPPER RECEIVER FOR AR-15
 
TheMK12 Mod H upper is 16.5” barreled upper with capable MOA accuracy. The flat top receiver has a Gas Buster® charging handle with military big latch, Pri rifle length black finished forearm, recce top rail that connects to the forearm rail. The upper also comes with a bolt carrier group, PRi's rail mounted flip up front and rear sights and AE brake and collar. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes.
 
All uppers are assembled cleaned and tested before shipping. Please allow 5~10 days for assembly and testing before ship date. Barrels are Douglas 416 stainless steel with 1-8 twist with M4 feed ramps.
 
SPECS
  • Caliber: 5.56 / .223
  • Upper Receiver: Forged T6 7075 Hard Coat Anodized Aluminum
  • Barrel: 16” 5.56 Douglas 416 Stainless Steel with M4 Feed Ramps, 1:7 Twist
  • Gas Block: Low Profile Gas Block with 2 Set Screws for Securing
  • Forearm: Rifle Length
  • Rails: All Rails Plus Recce Top Rail
  • BUIS: Front and Rear Rail Mount Sights
  • Muzzle Brake: 1/2 x 28 Threaded AE Brake and Collar
  • Overall Length: 25 Inches
  • Overall Weight: 5.7 Pounds

Additional information

Weight 5.7 lbs
Color

Black

Style

Complete

Make

AR-15

Length

16''

Make/Model

AR-15

Finish

Cerakote

Muzzle

1/2-28

Cartridge

AKK_5.56 x 45, AJJ_223 Remington

Twist

1-7

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.