80 percent arms ghost gun
Courtesy 80 Percent Arms
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Garden Grove, CA.,  – 80 PERCENT ARMS, Inc., the nation’s largest manufacturer of 80% firearms, is proud of our history in challenging the status quo by releasing new products that have revolutionized the 80% lower industry.

Today, we are continuing the tradition with the release of our new GST-9 Ghost: the world’s first truly modular 80% pistol frame system compatible with Glock® 19 platform components, as well as our patent-pending modular grips allow for easy conversion between compact and full size.

We started by taking a close look at the famously reliable Glock® platform, diligently researched what was missing on the market today, then used our years of expertise manufacturing 80% firearms to develop the most shootable 80% pistol system from the ground up.

The GST-9 Ghost features several improvements over the time-tested Glock® platform, starting with the mating surface between the slide and frame.

Frame rails have been extended three times their normal length for more repeatability, better accuracy, and controlled recoil impulse. Nickel plating improves reliability by reducing friction between moving parts in the harshest conditions, even after liquid lubricants have long since cooked off.

The GST-9 is centered around one thing: you. There is no one-size-fits-all solution to your mission. That’s why we designed the GST-9 to allow every shooter to build a frame that is tailor-made for them.

Whether it’s a compact or full-size grip, a streamlined magwell for carry or a flared magwell for competition, we give you options. Build the frame you want for your mission with the 80 Percent Arms GST-9 Ghost.


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  1. Checked out the site. A couple of things to note.

    You have to buy the jig separately … And the rails come with the jig, not the lower.

    I can’t see what gen Glock parts it takes, either above or on their site. Anybody happen to find that?

  2. I really like the way to adjust the grip length – because I’ve always wanted a long slide G26). The design is fairly modest looking, which is nice (and the trigger guard is rounded!)

  3. Genie’s out of the bottle, boys, and it can’t be stuffed back in. The 80% market is so entrenched now – and expanding with improvements – that the Left will have an uphill battle attempting to ban these. They’re getting easier and easier to afford, obtain, and make. I like the fact that we now have 80% kits for 1911s, Glocks, ARs, and others now coming onto the scene.

    If the ATF ever tries going full Leftard and designating 80% frames as “guns”, then watch the industry simply move to 70%, with one extra step required by the assembler. And life goes on.

    • It would be easier to simply make it illegal to privately produce guns which would prevent anything from marketing itself as a %lower.

      • “It would be easier to simply make it illegal to privately produce guns…”

        Cali is most of the way there with their requirement to engrave a serial number. I expect them to outright ban 80 percent kits next. Another ‘target’ will be requiring pressure-bearing components (barrels-bolts) to be serial-numbered and background checked.

        Leftists want utter control over *everything*…

        • They already passed that law. It’s called “precursor parts” It doesn’t go into effect for a few more years.

  4. Great idea but isn’t a California Company calling its firearms system “Ghost” like waving a red flag in front of a bull? If I were the boss I would call it the GMS for Glock Modular System. I understand the desire to taunt the anti-gunners but I would do it from the safety of Wyoming.

    • Perhaps those funding that endeavor are wealthy enough to be willing to be a test case, if necessary, all the way to SCOTUS?

  5. I have seen and experianced the 80% glocks many times. Recently I was cleaning one when i noticed some shiny metal flakes on the patch. After close examination i realized it was nickel plating. I worked in a plating shop in my younger days, having polished alot of metal, plated alot in zink, nickel, chrome, brass, copper, and hard chrome surfaces. We even did black oxide and parkerizing on the ocasional firearm. When seeing this i called the company and talked to one of their techs and he confirmed the nickel plating. He said they do it becouse people where complaining of the look of the stainless steel rail with out it. As an experianced plater it concerns me for two reasons. One it that its not holdind to the stainless in vital areas and two if you have ever had a peice of this nickel flake slip under your fingernail it can hurt like hell and in some cases create a festering sore. The tech told me he removes the nickel from the rails on his builds. I do not nessasarlly recommend that, but i do recomend polishing this back rail out with a super fine india stone paying close attention not to change the shape or geometry of it, just knocking off the loose nickel and getting the high points down even, then complete the polish with 2000 grit wet/dry to remove any left over loose nickel, and smooth out the stamping cuts. Then after wipeing it down with clp i use slip 2000 grease on all it slide contacting points. This i beleave is nessary to prevent wear to the slide rail guides. The front rail set is a differant stainless steel and much smoother and blackened. For those who beleave that this is not nessary or that they shouldn’t have to do this i say are those who think its all plug and play and don’t care if they put wear on a costly slide, and really should stop thinking that putting together a 80% percent is the same as putting together a snap together model car. A 80% needs attention as if your working in factory or pro smith shop building it for someone else.
    I’m not knocking the 80% but they defantly need to address this issue at the platting shop or quality controll side.
    So far many of the 80% builds are actually better than factory stock glocks becouse they use nitrided barrels and slides that fit tighter, hold up better than factory metals and finnishes. And the barrels are for the most part SAMMI specs allowing the use of lead bullets. Some are still building them with glocks polygonal rifled barrells but the slide and barrell lock ups seem much looser. One of the most accurate builds was put together using a Swenson barrell and slide sold at MIDWAYUSA, was far less expensive than others, but lockup between barrell and slide was great. Accuracy was stellar compaired to some of the other high dollor builds and pissed of alot of glock tards who thought spending 1000$ meant they were a better gun than a 500$ build becouse the bling was pretty.
    Quality is not allways equated to $.
    Good luck on your next build guys and gals.

    • ” I worked in a plating shop in my younger days, having polished alot of metal, plated alot in zink, nickel, chrome, brass, copper, and hard chrome surfaces.”

      You are *exactly* who I need to ask a question, please –

      I’m looking at a project gun, the owner told me someone had chrome-plated it in its past, for whatever reason stupid people do things.

      Anyways, how difficult would it be to remove the chrome plating from it? I understand it will need to be blued, parkerized, or other ways protected after.

      Can it be un-pimped?

  6. Don’t buy a Glock 17 slide and expect it to work on these. It takes Glock 19 parts, and their version of the Glock 17 is actually a 19L with the long magazine adapter.
    They advertise it takes all gen 1-3 Glock components, and that is not true. It is possible to use a gen 5 17 barrel and slide, but the recoil spring will be exposed.


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