AR-15 300 AAC BLK 10.5" Nitro-Met Quad Upper Assembly with Socom Style Brake -
is a perfect addition to your AR-15 build. All you need is a case of ammo to change your standard AR 5.56 to a new 300 Blackout upper.

Assembly Features:

• Chamber - 300 AAC

• Barrel Twist - 1x8

• Barrel Thread - 5/8 x 24

• Barrel Steel - 4150 Chrome Moly with Nitro-Met coating, CNC machined, M4 feedramps

• Muzzle Brake - AR-15 Gen 2 Micro Reverse Thread slip over Socom style fake suppressor

• Handguard - Midlength Hardcoat Anodized Quadrail Free Float 

• Gas Block - .750 Low Profile aluminum gas block, from aircraft quality aluminum and hardcoat anodized; pistol length gas system 

• Upper Receiver - A3 Flat-Top Upper, made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov. specs; assembled

• Bolt Carrier Group - Not Included

• Charging Handle - Not Included

DUE TO A HUGE INCREASE IN ORDERS - PLEASE EXPECT AT LEAST 4-6 WEEKS DELAY BEFORE YOUR ORDER SHIPS. YOU WILL RECEIVE A TRACKING NUMBER ONCE WE GET YOUR ORDER OUT THE DOOR.

AR-9 9MM 10.5" MINIMALIST SERIES GLOCK STYLE PISTOL/SIDE CHARGER/LRBHO.  THIS PISTOL IS BASED ON LAST ROUND BOLT HOLD OPEN UPPER RECEIVER. ACCEPTS GLOCK STYLE MAGAZINES. FFL TRANSFER ITEM. 

BARREL - 10.5" 4150 CMV STEEL GOVERNMENT PROFILE BARREL. HARDENED TO 26-32 RC AND STRESS RELIEVED.  CHAMBERED IN 9MM, 1-10 RH TWIST. THREADED 1/2X36. BARREL IS FINISHED OFF WITH SLIM REVERSE THREAD FLASH CAN SUPPRESSOR AND CRUSH WASHER.

BILLET SLICK SIDE UPPER RECEIVER WITH SIDE CHARGER - MADE FROM CERTIFIED 7075-T6 ALUMINUM BILLET. BLACK HARDCOAT ANODIZED COATED TO GOV. SPECS. LIGHTWEIGHT MODEL. DOES NOT REQURE FORWARD ASSIST. LRBHO.

GAS SYSTEM -  BLOWBACK

HANDGUARDS - FREE FLOATING SLIM KEYMOD, LIGHTWEIGHT. MADE FROM AIRCRAFT QUALITY ALUMINUM AND BLACK HARDCOAT ANODIZED. YOU HAVE AN OPTION TO CHOOSE RAIL DESIGN - KEYMOD, MLOK OR QUADRAIL. 

RAMPED 9MM BCG AND STANDARD BILLET AR-15 CHARGING HANDLE. 

STOCK: SB TACTICAL SBA3 3-POSITION ADJUSTABLE BRACE

LOWER RECEIVER: MA-9 GLOCK STYLE BILLET LOWER COMPLETED WITH MIL SPEC LPK,  

MAGAZINE: INCLUDED, CAPACITY DEPENDS ON STATE YOU ARE IN (EITHER 30RD OR 10RD)

WEIGHT: 5.5 LBS, STRIPPED

PLEASE NOTE: DOES NOT COME WITH SIGHTS. THERE MIGHT BE SOME VARIATIONS IN RAIL DESIGN, DEPENDING ON STOCK AVAILABILITY, SAME EXCELLENT QUALITY.

THIS ITEM MUST SHIP TO A FFL. PLEASE HAVE YOUR FFL EMAIL A SIGNED COPY TO US AT INFO@MORIARTIARMAMENTS.COM.  YOUR ORDER WILL NOT BE PROCESSED UNTIL WE HAVE THE COPY. PLEASE BE SURE THE FFL REFERENCES YOUR INVOICE NUMBER IN THE EMAIL, OR YOUR ORDER CANNOT BE PROCESSED. A SIGNED COPY OF OUR FFL WILL BE SENT WITH THE SHIPMENT. 

DUE TO A HUGE INCREASE IN ORDERS - PLEASE EXPECT AT LEAST 4-6 WEEKS DELAY BEFORE YOUR ORDER SHIPS. YOU WILL RECEIVE A TRACKING NUMBER ONCE WE GET YOUR ORDER OUT THE DOOR.

AR-15 Moriarti Duo TakeDown Pistol Upper Assembly | 5.56 Nato and 300 Blk Complete Combo allows for easy and convenient way to interchange calibers without actually detaching receivers. Compatible with virtually any Mil-Spec pistol AR-15 lowers, this TakeDown Duo saves time and money by getting two calibers in one set.

Duo set includes (barrel length can be modified to preference thru selections on top of page)-

• Caliber Duo: AR-15 300 Blackout / AR-15 5.56 Nato
• Operating System: Gas Impingement System – Semi-Automatic
• Receiver: Moriarti A4 Type Flat Top Upper Receiver
• Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard
• Receiver Finish: Hardcoat Black Anodize Finish
• Bolt Material: Carpenter 158 Steel, M16 
• Charging Handle: Included
• Barrel 1: 7.5“ 300 blk M4 Profile with Fluted Flash Can (You may select your preference on top of page)
• Barrel 2: 10.5" 5.56 Nato M4 Profile with Fluted Flash Can  (You may select your preference on top of page)
• Barrel Material: 4150 Chrome Moly Vanadium with M4 Feed Ramps & Nitride Treated
• Rail: Slim profile mlok rail (please note some variations of rail design maybe applied, based on stock availability, the same excellent quality)
• Barrels are equipped with LEO TakeDown barrel coupling system
• Features minimalist design
• DUE TO A HUGE INCREASE IN ORDERS - PLEASE EXPECT AT LEAST 4-6 WEEKS DELAY BEFORE YOUR ORDER SHIPS. YOU WILL RECEIVE A TRACKING NUMBER ONCE WE GET YOUR ORDER OUT THE DOOR.

9MM 10" SLIM PREMIUM UPPER HALF IS YOUR PERFECT CHOICE FOR 9MM AR UPGRADE. FITS MOST 9MM AR LOWER RECEIVERS AND COMES WITH BCG AND CHARGING HANDLE:

BARREL - 10" 4150 CMV STEEL HBAR BARREL. HARDENED TO 26-32 RC AND STRESS RELIEVED.  CHAMBERED IN 9MM, 1-10 RH TWIST.  1/2X36 TPI. BARREL IS FINISHED OFF WITH FAKE THREAD ON CAN.

A3 SLICK SIDE UPPER RECEIVER - MADE FROM CERTIFIED 7075-T6 ALUMINUM FORGINGS. BLACK HARDCOAT ANODIZED COATED TO GOV. SPECS. NO DUST COVER OR FORWARD ASSIST. 

GAS SYSTEM -  BLOWBACK

HANDGUARDS - FREE FLOATING SLIM MID LENGTH MLOK, LIGHTWEIGHT. MADE FROM AIRCRAFT QUALITY ALUMINUM AND BLACK HARDCOAT ANODIZED.

RAMPED BCG AND CHARGING HANDLE INCLUDED. 

WEIGHT: 3LB 8OZ. MAKE IT A COMPLETE AR-9 RIFLE BY CHOOSING ADDITIONAL OPTIONS ON TOP OF THE PAGE.

PLEASE NOTE: RAMPED BCG IS HYBRID and WILL WORK WITH COLT PATTERN AND GLOCK PATTERN LOWERS AND MAGS. PICTURE SHOWS A COMPLETE POSSIBLE BUILD.