We design firearms parts that can be 3D printed on most low cost FDM 3D printers. Our specialty is in the AR platform. Specifically the lower receiver. If you would like to have an off the books AR, whether it’s a 9 MM pistol or a 308 rifle, we have a lower design for you.
The basic process of 3D printing your own “ghost gun” is simple. Download the design files, get a 3D printer, print your lower, get the parts and assemble. Navigate the menus above to find more.
The Gen 3 Stock has been released! Hardware kits are available: https://hoffmantactical.com/product/gen-3-stock-hardware/
You can find Hoffman Tactical on YouTube , Instagram , Brighteon and Odysee .
New stock system is ergonomically correct and has a positive retention method.
Buffer Bands fresh from the plating shop.
An LR-308 Prototype. I did not like the VO3D PLA that it was printed from.
Taulman Glass Fiber Nylon Test Samples. Impact and tensile. Other then it's creep issue, I really like this Nylon.
AR-9 Prototype with built in support.
A separated 9 MM case. This is the result of a too light buffer in an AR-9.
Creep test with Overture Easy Nylon. Annealing almost completely eliminated the creep problem.
PLA test samples used to evaluate the new impact tester.
3D printed AR-15 Upper and Lower prototype.
An attempt at more accurate printer calibration.
Overture Easy Nylon waiting to be creep tested.
Double Rib Lower after a range day. Taulman Glass Fiber Nylon.
COEX Nylon. I have actually had a lot of clogging issue with the carbon fiber. I think it has too high of a fiber content.
TPU butt pad prototype for Gen 3 Stocks.
I bought this nozzle to use with fiber filled Nylon. The larger 0.5 MM orifice should help prevent clogging, but still provide good detail.
Playing with tree support. I still think built in support is much better, and will design some for a Glock frame sooner then later.
Test piece for testing different design parameters.
5.56 x 45 spent casings after a day at the range.
Chilling in the snow with the Double Rib Super Lower.
Triggers waiting to be packed into kits.
COEX CF Nylon. You can see the results of a nozzle clog on the right.
Old style Gen 1 AR-15 swivel pin plates.
Grip Prototype. I have found that an inverted honeycomb is a better texture then plain honeycomb.
My Ender 3. It's a capable little machine that comes at a ridiculously low cost.
Nozzle Temp vs. Layer adhesion eSun PLA+
V2.5 LR-308 Lower. This is a great lower, the V3.0 grip is nice as well.
Assembled V2.5 LR-308 Super Lower waiting for it's upper to be built up. KAK bolt and Aero Precision upper and handguard.
Square nut insert shortly before being imbedded in the print.
A collection of 3D printed AR lowers. LR-308, Double Rib, AR-15, and AR-9.
V1.4 LR-308 Super Lower with the Gen one stock and grip.
Printing a TPU butt pad for a Gen 2 Stock.
3D Printed AR-15 and LR-308 lowers with the Gen 1 Stocks.
This is an awesome lower. Push Plastic Carbon Fiber Nylon.
Cleaning the Prusa V6 Hot End.
Lots of broken samples. Tensile and impact testing.
Fun under white phosphor.
308 Ammo with the V1.4 LR-308 Lower in the background.
AR-9 Super Lower with a KAK bolt and barrel.
Brass Bushings for the Reinforcement Kits.
AR-9 Heavy Buffer. These are a must for a good AR-9 build.
An interesting experiment. AR-15 Super Lower printed on a resin printer from eSun Hard Tough resin.
Annealing small glass filled Nylon parts in an oil bath.
The first functional AR-15 Lower printed by Hoffman Tactical.
Gen Two Stock installed on an LR-308 Lower V1.4.
I've had a lot of issues printing with the Push Plastic Carbon Fiber Nylon recently, but it makes for great prints when it works.
New buffer band prototype.
The first lower printed with a buffer band.
V3 Chairmanwon G17 frame. Pretty cool.
