Ambi LightWeight AR15 80% Lower Receiver Set Billet
$339.99 Original price was: $339.99.$289.97Current price is: $289.97. Add to cart

Ambi LightWeight AR15 80% Lower Receiver Set Billet

Original price was: $339.99.Current price is: $289.97.

Now Available: No Serial Number or FFL needed!

(1 customer review)

6061 or 7075 *

Coating Options *

Custom Color [If Selected]

Bolt Catch Pin Hole *

Product price: $289.97
Total options:
Order total:

All machining processes for our billet LightWeight Ambidextrous AR15 80% Lower are completed other than drilling/milling the FCG (Fire Control Group) pocket and trigger slot, and drilling the Selector switch, Trigger and Hammer pin holes.

LightWeight Ambi AR-15 80% Receiver Set Includes:
– Ambi Lever, Spring, Pin, and Shaft
Bolt Catch Not Included
Ltd lifetime warranty against manufacturer defects

Lower Receiver:
Ambidextrous Bolt Release
– CNC Machined from 6061-T6 Billet Aluminum
Rear lug pocket already machined
– ‘Pictogram’ style Fire-Safe Engravings
– LightWeight FCG Faces and Mag-well
– Integral trigger guard for added overall strength
– Machined (not broached) Mag-well with wide flare

Upper Receiver:
– CNC Machined from 6061-T6 Billet Aluminum
– Accepts standard ejection port cover, pin and spring
– LightWeight (inset) Faces on Sides
– Sleek and low-weight No-FA slick-side design
– Close in slim-line case deflector
– Built to mil-spec dimensional standards


– 7075-T6 Billet Aluminum (when Available)
– Bolt release pin hole Drilled and Tapped 6-32
– Glass Bead Blasted Finish
– Black Anodized
– Cerakote Burnt Bronze
– Cerakote FDE (Flat Dark Earth)
– Cerakote Graphite Black
– Cerakote Tungsten Grey
– Cerakote Custom Color [View Here]

Shipping Restrictions:

Although not generally restricted, you should refer questions regarding manufacture, NFA Regulations, and individual state regulations to the BATFE, your local law enforcement or obtain legal guidance prior to manufacturing. All NFA Rules apply.

No FFL Required!  This billet LightWeight Ambi AR15 80% receiver set can be securely purchased from our website, and shipped direct to your home or business. (See the Shipping/Returns webpage for updated Shipping Restrictions)

1 review for Ambi LightWeight AR15 80% Lower Receiver Set Billet

  1. Anonymous (verified owner)

    Love the look, and quality of it. The only things I can complain about is that the ambi bolt catch internal pin doesn’t seem to be longer enough, the ambi bolt catch lever it comes with seems to be a little flimsy, and the cerakote made the tolerances for the take down pins way too tight.

    • Dan – Machinist (store manager)

      Thanks for the review and feedback Anonymous!

      Regarding the pass-thru Pin from the Ambi Lever, we would be quite certain that it is built to design length to +/-0.000″ because it’s made on a Swiss-screw machine. We would suspect more that the Bolt Catch itself is either off position on its hole, or our Pin hole for that is off position – or it could be a combination of the two that when combined is not good. The Ambi Lever should not be floppy because we have the system designed to be tight – much like the TD pin holes. ( ;

      And on the TD Pin holes, we want those to be tight after coating. They will loosen with use, but they won’t EVER be floppy and give you a “wobble” between your Upper and Lower. We hate Wobble, and we aren’t going to compensate for weak machining tolerances with an “Upper tensioning screw” – which is what everyone else does. These are matched Sets, and they shouldn’t need a tension screw.

      Thank you for your support and feedback! We value all input, and try to make adjustments to our products as needed.

      Dan – machinist

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