cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

AR-15 Ambidextrous 80 Lower and Safety Bundle - Ambi Starter Pack

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Are you a left-handed shooter? Are you a right-handed shooter looking to speed things up? Our Ambidextrous AR15 Starter pack is for you!

Providing a refreshing take on our standard AR15 design, our Ambi lower features contoured cuts, an ambidextrous bolt release and is also packed with additional adjustment features. It’s even the same weight as our slimmer, classic lower!

Included with the lower is our 80% Arms Ambi Safety Lever. Made from glass-reinforced nylon, it’s suited for those looking to shave those last few ounces. It has an adjustable 90/60 degree throw that can also be set without removing the safety cylinder!

Take advantage of its extremely wide aftermarket support to customize and fully tailor your build. Our high-quality lowers are made using industry-leading CNC machines which create very tight tolerances.

We manufacture our 80% lower receivers with US-sourced aerospace grade 6061 aluminum. The material is more durable, resistant to corrosion, and yet much easier to mill than any other alloy. Combining our 80% lowers with the Easy Jig® Gen 3 and Freedom Jig Router will set you up for an even smoother and more successful build process.


  • CNC Milled 6061 Aluminum Construction

  • Broached/Flared Magwell

  • Integrated Trigger Guard

  • Threaded Bolt Catch Screw Hole

  • Threaded Rear Takedown Pin Detent Hole

  • Enhanced Fire/Safe Engraving

  • Adjustable Trigger Pre-Travel Takeup

  • Upper/Lower Receiver Tensioner

  • Completed Rear Takedown Lug Pocket

  • 80% Arms Ambi Safety Selector

  • Full Mil-Spec Parts Compatibility

  • Includes Bolt Catch Screw Set and Ambi Hardware Set

*Please Note: Bolt Catch not included, displayed in photos to represent Ambi specific features. Compatible with Easy Jig® Gen 2 & Gen 3. Not compatible with Easy Jig® Gen 1 or Universal Drill Press Jig. 

80 Percent Arms strives to provide the highest level of customer service within the 80% and firearm industry as a whole. We support all of our products with a lifetime warranty* so you can build with confidence.

You can always expect prompt and educational information as customer satisfaction is our bread and butter. For any questions or concerns regarding our products, please contact us at either, (949) 354-2767, or message us via our live chat!

For more help and tips, be sure to check out our instructional videos on Odysee.

Shipping Restrictions: 

This item is restricted from shipping to the following: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Nevada, New Jersey, New York, Oregon, Philadelphia Pennsylvania, Rhode Island, Washington, Washington D.C.

Under California law, this product is or contains an unserialized “firearm precursor part” and cannot be sold into the State of California. 80% Arms cannot accept any orders of this product for shipment to the State of California, or to any customer who is a resident of the State of California.