12515 Maxim Drive - Houston - Texas - 77065

Interfor Usa Group is a small FFL07 company specialized in the small batch manufacturing of parts and tactical firearms and equipment.

Founded by long time firearms enthusiasts, the aim of Interfor is to re build legal military weapons for collectors, target shooters and weapons enthusiasts, so they can possess civilian-legal versions of their favorite military and historical firearms.

We do this rebuilding parts on our CNC machine system or making some parts by hand.

Due the high tolerance of the original military firearms and the scarce availability of spare parts and blueprints, each one of these guns must be rebuilt by hand and fine tuned and test fired before being shipped.

For this reason our production rate may seem low but we strive to fulfill orders from our customers in reasonable amount of time. Right now the backlog is about 30 days and we are working weekends to keep the production rate. Our best customers have ordered about 10-12 different models/versions of firearms and having so many returning customers must mean something.

On the other hand we can offer great flexibility to the customers, as our guns can be built exactly as the customer requests, making possible to have clones of very rare historical guns, often based on museum pictures or other scanty material.

We test fire each firearm before shipping to make sure that everything works and the customer gets a functional gun right out of the box.

Can see some of our builds in action on our Youtube video channel, Interfor USA Group or at the OUR FIREARMS page on this site.

We are also fully licensed importers (FFL 08) and registered exporters of firearms and ammunition.

Feel free to contact us at the CONTACTS page or via email at :

We were asked by a customer to make a batch of 25 scope mounts for the Swiss military SIG-510 or PE-57 military rifle, available in the US as a parts kit.
We decided to accept the challenge and we developed the parts. It took us a month to draw the parts and make them ; we are sending them to the customer right now but seem perfect on the receiver they sent us for testing. 

They were very complex parts (Sig seem to have made in a strange shape, judging by one original we had). We decided to make a 3d printed part from the drawing we had made. We modified the drawing were it needed to be modified, bought the stock material and made them.

We also drilled and threaded them M8x1.25 so they could lock on the receiver with bolt system very similar to the original. 

SEE OUR VIDEOS AND PICS PAGE FOR

MORE MOVIES AND PICS OF OUR GUNS

SEE ALL OF OUR FIREARMS BUILDS HERE

After 6 years if trying we have finally made it. We have made an RPD lower based on the AR15 system. 

This gun uses Ar15 parts and an AR10 tube and spring (for max energy) and finally we have found a material capable of withstanding the RPD energy and recoil. This is the Navy Seals 16" version and with this system is more similar to a SAW than a RPD. The original RPD stock can be used too, using a different design.

This time we wanted to make an M203 clone using a 37 mm. launcher equipped with Picatinny handguard. While mounting a Launcher on a rifle is very easy using the Picatinny, we wanted to make something really similar to the original M203. 

We designed an M203 handguard clone from a very hard to find original and we equipped it with a Picatinny rail underside.

With this handguard it is possibile to mount any launcher with a Picatinny clam on top (almost all available ahave one) and install it under the hadguard making a credible M203 system look alike. 

All cases and projectiles used are 3d printed too.

37 mm. launcher have been deemed signal launchers by the Coast Guard and are considered non firearms (respecting certain conditions).

We have been honored by Internet personality MISHACO to test and evaluate two of our AR70/90 builds. The builds were regularly paid full price so the good the bad and the ugly will be all there. We thank Mr. MISHACO for the great opportunity he has given us introducing one of our most known builds to his audience. 

Need more information? Download the PDF manual here: SIG 550 family magazine adapter guide

This is the presentation and test fire of our AR15 magazine adapter for the SIG 550 faily (551-552-553). The system is composed of one adapter which drops in the SIG rifle. The Lancer AWM magazine works "as is" while the MAGPUL Gen 2 or 3 magazine you must use the provided overtravel guard which slides on the magazine body. Other magazine model (metal etc. are NOT supported due to the variety of dimensions out there). Also each magazine will need a slot cut in the back as by jig on the side of the over travel guard provided with the kit.

This adapter is designed for steel lowers only. Aluminum lowers have different dimensions. If you have an aluminum lower see our Aluminum lower model up the page. 

See more of our guns at 

OUR FIREARMS and

VIDEOS AND PICTURES  page