2A Armament’s Xanthos-Lite “Large Frame” .308 Ultra-Light Billet Receiver Set

2A Armament, known for their ultra-light Balios-lite receiver set and rifle for the intermediate caliber AR-15, has upped the offering to full battle-rifle calibers with their Xanthos-Lite receiver set. The new recevier set, introduced and sold as matched pairs (due to the large variation of specifications within the .308 world) is geared for “large-frame” parts and components (meaning DPMS LR-308 or “Gen-1” components).


The receiver set is compatible with most LR-308 components and is manufactured to the DPMS “High” upper rail height specification. The upper does not feature a forward assist (which this writer personally appreciates), but keeps the dust cover. Where possible, the aluminum is thinned out (but never perforated). Material is left for the selector and anti-rotation pin compatibility.


The Xanthos-Lite is machined from billet 7075-T6 aluminum by 2A Armament Idaho with pockets to ensure maximum weight reduction while maintaining strength for heavy-duty use. Outside the striking exterior, its loaded with features like a screw-in pin bolt release retention (no more roll pins!), a tapered charging handle ramp to eliminate wear marks, tension screw for tight receiver fitment, and directly machined-in T-Marks (great for cerakote lovers, as the marks stay post coloring).

All receivers are bead blasted (meaning nice luster finish) and Type III, Class 2 hard anodized for finish strength.

Those interested can pre-order for $689, with 2A Armament reporting “2-3 weeks out” at the time of this writing. One can also check out a great manufacturing video we posted up previously. 


Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • Colin s

    Not quite related, but does anyone know the mag well dimensions of the SR-25 (pmag)pattern rifles? My google-Fu is admittedly rubbish but, having searched for ages, I can’t seem to find anything specific.

    • Keith

      It is AR10A, DPMS pattern/specs. Perhaps those dimensions are better known to the google fu

      • Colin s

        Thanks Keith, found a useful drawing… Even with my awful search skills.

  • Bear The Grizzly

    Nice. I’ve been hoping Battle Arms would make a 308 version of theirs, but this works too.

  • JumpIf NotZero

    I met these guys through some friends at SHOT. The products looks great and the machining was legit. The lightweight stuff was disconcertingly light, I’m sure it’s strong-enough, but it would always be in the back of my mind that everything was as thin as possible.

  • USMC03Vet

    That finish is nice. Would be a shame if someone were to scratch it….

  • TFBTV should do a lightest ar build and see how light they can get it.

  • Kyle Hestand

    Is there a reason the industry just refuses to agree to a standardized AR-10? It really seems like everyone both manufactures and consumers would benefit more from a uniform base platform to build off of just like the AR-15.

    • That’s probably because there are no US military mil-specs for the industry to rally around like there is with the AR. ArmaLite itself changed the specs at least twice, not counting changes that individual countries requested with there orders.

  • Aono

    I’m more excited that they might be implying a “small frame” set. Then just throw in a “small frame” BCG and barrel extension and the industry can finally get this G2 party started..

    • JumpIf NotZero

      I was into the idea of the G2 stuff…. Until I felt the DPMS version. So. Bad. The idea might be solid, not sure, no one can prove to me the accuracy potential is there with the AR15 sized parts and the 308 round.

      • ostiariusalpha

        Ah, I only noticed your comment just now. You should know that Mega Arms is coming out with a GII frame rifle pretty soon, and they have much better quality in their products than what DPMS is generally capable of. Something to keep an eye on, for sure.

  • Suppressed

    I’m really bothered by that scalloped-out pic-rail.