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.
You can find Hoffman Tactical on YouTube , Instagram , Brighteon and Odysee .
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.
An attempt at more accurate printer calibration.
An LR-308 Prototype. I did not like the VO3D PLA that it was printed from.
Creep test with Overture Easy Nylon. Annealing almost completely eliminated the creep problem.
Taulman Glass Fiber Nylon Test Samples. Impact and tensile. Other then it's creep issue, I really like this Nylon.
Overture Easy Nylon waiting to be creep tested.
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.
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.
Square nut insert shortly before being imbedded in the print.
My Ender 3. It's a capable little machine that comes at a ridiculously low cost.
A separated 9 MM case. This is the result of a too light buffer in an AR-9.
Buffer Bands fresh from the plating shop.
PLA test samples used to evaluate the new impact tester.
Test piece for testing different design parameters.
5.56 x 45 spent casings after a day at the range.
AR-9 Prototype with built in support.
Old style Gen 1 AR-15 swivel pin plates.
Cleaning the Prusa V6 Hot End.
Playing with tree support. I still think built in support is much better, and will design some for a Glock frame sooner then later.
Grip Prototype. I have found that an inverted honeycomb is a better texture then plain honeycomb.
COEX CF Nylon. You can see the results of a nozzle clog on the right.
This is an awesome lower. Push Plastic Carbon Fiber Nylon.
Chilling in the snow with the Double Rib Super Lower.
TPU butt pad prototype for Gen 3 Stocks.
Triggers waiting to be packed into kits.
A collection of 3D printed AR lowers. LR-308, Double Rib, AR-15, and AR-9.
308 Ammo with the V1.4 LR-308 Lower in the background.
Nozzle Temp vs. Layer adhesion eSun PLA+
3D Printed AR-15 and LR-308 lowers with the Gen 1 Stocks.
An interesting experiment. AR-15 Super Lower printed on a resin printer from eSun Hard Tough resin.
Lots of broken samples. Tensile and impact testing.
Fun under white phosphor.
Printing a TPU butt pad for a Gen 2 Stock.
V1.4 LR-308 Super Lower with the Gen one stock and grip.
AR-9 Super Lower with a KAK bolt and barrel.
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.
Gen Two Stock installed on an LR-308 Lower V1.4.
AR-9 Heavy Buffer. These are a must for a good AR-9 build.
Brass Bushings for the Reinforcement Kits.
The first functional AR-15 Lower printed by Hoffman Tactical.
The first lower printed with a buffer band.
