ATI “Fatboy” Double Stack Compact 1911


I was finally able to handle a 1911 I’ve been curious about for a long time the ATI FX 1911 “Fat Boy”. This compact 1911 is a double stack that holds ten or twelve rounds of 45 acp ammunition. The finish is a Matte blue and is a lightweight configuration. The weight was not available today but appeared to be in the lower 30oz range.


3.20″ bull barrel

Double stack 10 or 12 round capacity

Low profile rear sights

Skeletonized aluminum trigger

Military style slide stop and safety lock

6.89″ overall length


The grip is very comfortable and is not wide enough to pose a problem for those with medium size hands. The ATI folks have made some changes since the first version came out.Notably the previous grip panels were built into the frame. They have added grips that lean more towards the grips we are accustomed to.The sights are Novak like. The trigger pull is about five pounds with a short take-up with a crisp release. An extended beavertail is standard.

The small size and magazine capacity along with good ergonomics make this a 1911 worth taking a good look at. MSRP is $699 but I’m sure the price a buyer will actually see would be about $100 less.

Phil White

Retired police officer with 30 years of service. Firearms instructor and SRU team member. I still instruct with local agencies. My daily carry pistol is the tried and true 1911. I’m the Associate Editor and moderator at TFB. I really enjoy answering readers questions and comments. We can all learn from each other about our favorite hobby!



  • Darrell Park

    Love this I need to see one in my hands….

  • mosinman

    Anyone know where these are made?

    • Philippines:-)

    • Philippians by S.A. M Inc. They also make a Govt model for their army. I have sold every model 1911 they make with no problems. I also own a Govt model and a Titan. Great Pistols.

  • Randy

    I own one, love it… Great shooter, great to carry, a breeze to conceal.

  • gunslinger

    get it in “full size?”

    but if that’s the case, why not just get a glock or XD?

    and how much of the parts are compatible with standard 1911 “thin” parts?

    • No they have no full size pistols like that one. It was strictly made for concealed carry with more ammo. Internal parts should fit without a problem. They would need to be series 70 parts.