Manufacturer: BECK DEFENSE

Availability: In Stock

  • $1,249.95



BECK DEFENSE Complete Billet PISTON Upper Receiver with Our BECK DEFENSE Match Grade Barrel.

BECK DEFENSE BRA Adjustable Short Stroke Piston System.  We Offer You the Most Current, State of the Art Piston Design on the Market.  This Piston System is Fully Adjustable, Great for Suppressor Shooting or Just Fine Tuning Your Weapon for Different Ammunition.  The Ease of Maintenance is Unrivaled by Any Competitor Product.  Remove One Take Down Pin and The Entire Piston System Pulls Forward Through the Gas Block for Cleaning.   

We offer precision from start to finish, bringing you a product to last a lifetime.  Every BECK DEFENSE FIREARM is manufactured first and foremost as a defensive weapon, and it is a responsibility we take very seriously --Our customers lives' depend on it.  

This product is built in the USA by American hands.  


  • Regulate and Change Gas Port Sizes With the Turn of a Knob – By Hand, No Tools Required
  • Four Different Gas Port Sizes – 1. Adverse Conditions, 2. High Pressure 5.56mm Ammo, 3. Low/Standard Pressure .223 Ammo, 4. Silencer
  • 360 Degree Rotation of Regulator Knob, Simply Pull and Turn with One Hand, No Buttons to Press while Actuating
  • Interlocking Mechanism Prevents Accidental Rotation
  • Easily Adjustable by Feel in Low Light by Way of Regulator Knob Index Marks


  •  UPPER RECEIVER:  CNC Machined from 7075-T6 Aluminum Billet,  Complete With Mil-Spec M4 Feed Ramps,  Type III Hard Coat Anodized
  •  BARREL:  Beck Defense Match Grade 5.56mm,  1/7 Twist,  16”,  Chrome Moly Vanadium, Air Gauged,  Muzzle Threaded 1/2x28,  Salt Bath Nitride Finish
  •  BOLT/BOLT CARRIER GROUP:  We Offer You The Best In The Industry - Nickel Boron Carrier with Patented Anti-Tilt Feature.  Carrier has Intergrated Polymer Buffer that Eliminates Bolt Chatter and Aids in Reliability.  Also, Decreases Metal on Metal Wear and Fatigue,  Carpenter 158 Steel, heat-treated, shot peened and magnetic particle inspected.  This Top-Quality BCG Resists Fouling, Needs Minimal Lubrication, and Easy to Clean. Manufactured to government drawings.
  • HANDGUARD:  Our HD 13" Free Float,  This Handguard Shows As A Continuous Top Rail With No Breaks,  Features Anti-Rotation Tabs, Built In Non-Rotating QD Sling Mounts, Scalloped Rails That Allow You To Run Without Rail Covers,  Fixed Picatinny Rails On The Front and Key Mod Accessory Holes On The Rest Of The Handguard At The Sides and Bottom - Allowing You To Specifically Modify The Hand Guard To Your Personal Needs.  Or Install Nothing and Have A Nice Smooth Feel. 
  • OPERATING SYSTEM:  Adjustable Short Stroke Piston, Mid Length Location
  • MUZZLE DEVICE:   Mil-Spec A2 Bird Cage
  • CHARGING HANDLE:  Standard Mil-Spec
  • SIGHTS:  Sold Separatley  

Delivery Via UPS

Beck Ammunition ships your items to you via UPS because they are the only carrier with 15% or greater share across North America! That means your package will arrive as quickly as possible.

Customer Service

Our support staff is the best in the industry. We are here to serve our customers by providing product and service information, and resolving product & service problems