AX556 Full Ambi Lower Receiver

Design

The AX556 is a revolutionary design upgrade to the AR15 platform. For the first time every function on the lower receiver is now accessible from both sides of the weapon. We were able to integrate the added controls with a minimum number of additional parts while maintaining the standard location and functionality of the legacy controls. Because of this people familiar to the original platform can pick up and shoot an AX lower without having to learn anything new at all to operate the weapon. After spending some range time with the weapon the additional controls prove to become second nature quite quickly.
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver

Machined Lowers

The AX556 billet lower is machined from 1.75" thick 7075-T651 aluminum plate on a high-speed 5 axis machining center. This allows us to produce the lower with the least possible setups helping to ensure the proper dimensional and geometric relationships between features are held well within tolerance. This receiver with all its function and form details requires 60 tools to complete on the machine. After machining and inspection on a CMM the lowers are bead blasted and then sent out for hard anodize.
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver

Machined Parts Kit

The parts kit includes:

  • Front Takedown Pin
  • A-DAC Pin
  • Bolt Drop Pin
  • Bolt Drop Plunger
  • Bolt Drop Lever
  • AX-EBC (Extended Bolt Catch)
  • Anti-Rotation Hammer Pin
  • Magazine Catch
  • Left Hand Mag Release Lever
  • 3 custom springs
  • 2 Turned Set Screws
  • Fulcrum Pin (pre-installed)

AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver

BAD Bundle

We have chosen to use the B.A.D.-A.S.S. safety selector from Battle Arms Development. It is the only ambi safety that meets the functionality and quality standards that we have set for our lower receivers. No other selector comes close to having the combination of versatility, ergonomics, and quality. These selectors are machined from solid bar stock, heat treated and plated just like the components in our parts kit. The B.A.D.-A.S.S. is available in a standard 90 deg throw configuration as well as the new short throw 45 deg model. BAD has partnered with us to offer their selectors at a special discounted price ($20 off MSRP) when purchased with any model of our lower receivers.
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver
AX556 Full Ambi Lower Receiver

Finished AX556

Once back in the shop from hard anodize the AX556 lowers are inspected again and then have the hardened fulcrum pin for the Left Hand Mag Release permanently pressed into place. The custom machined parts and lower are then packaged together and shipped. Here are pictures of the AX556 stripped lower and with the fulcrum pin installed. Assembly of the AX556 is even easier than a standard mill spec lower with no roll pins to deal with. Just drop the additional springs and pins into place under the bolt drop lever and bolt catch and tighten down the set screws.

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