Our ALL NEW OMNI HYBRID MAXX features a fully-patented metal reinforced polymer upper receiver.  

Omni Hybrid MAXX Polymer Upper Receiver with Metal Insert
8.5" 300AAC Blackout  Black Nitride Coated Barrel 
7" Free Float Rail 
Low Profile Gas Block
Flat Top, Optics Ready
Mil-Spec
Standard AR15 Lower Parts Kit
Fully-Assembled Upper Receiver
Pistol Buffer Tube Included
Ambidextrous Sling Plate

Limited Lifetime Warranty and Product Return Policy Please Click Link For Further Details:
http://www.americantactical.us/warranty.html

Available At ATI Stocking Dealers:
http://www.americantactical.us/stockingdealers

Or Find A Local Dealer Near You:
http://www.americantactical.us/catalyst.aspx?st=80000&e=dealeroptions

View Manuals and Exploded Views on Downloads Tab:
http://www.americantactical.us/page/downloads.html

Please Read and Review Parts Disclaimer:
http://www.americantactical.us/page/parts_disclaimer/29

Recommended Ammunition:

• Use only commercial grade ammunition in its original packaging that corresponds with the caliber of the gun.  The correct caliber is imprinted on the gun.
• .300 Blackout Brass Cased Subsonic with a minimum of 187 grain and a minimum of 1050 Feet Per Second (FPS) or Brass Cased Supersonic with a minimum of 125 grain.
• Never use reloaded, “refurbished”, hand-loaded or non standard ammunition of a different caliber.
• Never use dirty, wet, corroded, bent, damaged or oiled ammunition.
• Unfortunately, it is not possible to adjust a semi-automatic gun to all loads.

*Highly advise against using Steel cased ammo due to excessive wear and tear from steel and lacquered coated rounds can cause premature carbon buildup and stoppages.