WarBlock Builder

Welcome to the WarBlock Builder! Simply choose your base barrel configuration, then add the options you want and click add to cart.

Your WarBlock barrel assembly will then be expertly aligned, pinned using MIL-STD 2/0 taper pins, and your selected options assembled.

*Because we don’t know what your barrel looks like, images of the Customer Supplied Barrel option are generic and may not appear true to life. Pinning and assembly charge of CSB is $35. Yes we can do nitrided/melonited barrels.

Looks like you're trying to access the configuration page directly. This page can only be accessed by clicking on Build your own button from the product or the shop page.

Join the Conversation

  1. James Dressman


  1. Question is this a mil spec chrome line barrel and it is truly a midlength gas system and is it a 1/7 twist

    1. If you are referring to the Faxon barrels, none of those are chrome lined. All of the midlength barrels (as well as all of their barrels) they are all QPQ nitrided inside and out with 1/8 twist rates.

  2. I need a Faxon 20″ gunner barrel for an A1 clone build. When I choose that barrel, the option for the A2 sight base says .75″, but if I’m not mistaken, the GUNNER barrel requires a .625″. Do you have .625s to pin to these? Do you have non-F marked sight bases? My build won’t have a flat-top upper, I need the shorter one.

    1. Hi Chris,

      Good catch, yes that is just a glitch with the builder app that hasn’t been addressed yet. We do have 0.625″ A1 FSBs (non F-marked) for pinning the GUNNER barrels with and we have those in stock as well. The A1 clone builds have been quite popular and the 20″ GUNNER barrel is an excellent choice for that.

  3. Hi James,
    I think I have everything listed that I need for a drop in on my A2 carry handle upper w/M4 ramp cuts.If not,please advise. Thank you for your prompt reply to my questions. Order included.

  4. Hello, will you be making blocks that will be compatible with ar10 rail heights? Specifically thinking of doing an aero precision build with faxon gunner barrel.

    1. Hi Ben,

      Yes we will be at some point. I can’t say when as of yet though. As you know unlike AR15 receivers, there are different rail heights for AR10 receivers between manufacturers, so it’s not an easy one size fits all solution. The good news is that we will probably start with the Aero Precision rail height standard first since we use and love their receivers.

    1. Hi Ian,
      We mostly use Aero Precision but yes you can send your own receiver. Not a problem at all.

Leave a comment

Leave a Reply to Chris Cancel reply

Your email address will not be published. Required fields are marked *