Manufacturer of Custom Firearms and Suppressors

P.O. Box 225   Elliston,  MT  59728

Phone 406-492-4570


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ATF-41F (formerly 41P) UPDATE: This regards a presidential order issued in Sep 2013 to require each "Responsible Person" (RP) associated with any legal entity, such as a trust or corporation, to provide personal information to ATF and local law enforcement when filing an ATF Form 1 (tax-paid request to register and make a NFA), ATF Form 4 (tax-paid request to transfer an existing registered NFA), or ATF Form 5 (tax-exempt request to transfer an existing registered NFA).  Personal information provided by each RP to ATF includes two photographs, two FBI fingerprint cards, and a completed ATF Form 5320.23 (NFA Responsible Person Questionnaire).  A photocopy of the Form 1, 4, or 5 and a copy of each RP's 5320.23 is provided to the chief law enforcement officer (CLEO) in your area.  The CLEO usually is the chief of police or sheriff.  The CLEO no longer signs or approves any of the forms.    The changes to the filing process became effective on 13 July, 2016.  Any forms filed prior to this date are grandfathered in under the old system.

Consult this page for future updates, or check our LEGAL TIPS page for more details.

Welcome to the world of exotic "NFA" firearms.  Illustrated on these pages are some of the National Firearms Act (NFA) registered suppressors (silencers), suppressed rifles and pistols; short-barreled shotguns (SBS); smooth bore pistols (AOW); short-barreled rifles (SBR); machine guns; and custom tactical/scout carbines we manufacture here in our facilities.  We also reactivate DEWATs and can assemble your parts kit with the proper paperwork.  In addition, we are set up to refinish, repair, and custom engrave firearms.  We even have a discount page where you can browse through a wide variety of firearms (both conventional and NFA) and accessories we have on inventory CLOSEOUT.

We can custom design or alter most firearms to meet your needs, so if you don't see what you want, please contact us and we'll work with you to build the firearm you desire.  In the process, we will advise you on what we think will work and won't work, what is safe and what is not, and what is legal and what is not.  Our ultimate goal is to combine ingenious design with quality workmanship to produce firearms that meet your personal preferences or specifications.  To back our promise, we provide a five year warranty for repair or replacement on any of our workmanship.

Perhaps you are uncertain what it is you need, or wonder whether it is practical or justified.  NFA firearms sometimes appear daunting or even sinister.  But in truth they fill a variety of niches.  For example, the original concept for the silencer was to allow backyard target practice and introductory firearms training.  It performs essentially the same function as a car muffler.  The notion of it as an assassin's weapon was largely a fiction created by Hollywood in the 1930's and sustained to this day.  In truth, a silencer does not silence a firearm anymore than a muffler silences a car engine.  It simply suppresses the sound level to a point where, hopefully, the shooter can fire a pistol or rifle without the need for wearing hearing protection.  However, if the bullet being fired reaches the transonic range (beginning at approximately 92% the speed of sound), it will produce a constant distinctive, loud crack.  The bullet will cease "cracking" when it drops below the transonic range, and the crack (or sonic boom) will dissipate.  The crack will not expose the shooter's position because the sound wave radiates outward.  When the wave strikes an object, it bounces off it at various angles, further distorting the origin of the sound.  It is for these reasons that most aficionados prefer to use the more descriptive term “sound suppressor” instead of silencer.  It would even be appropriate to consider the silencer as an oversized muzzle brake or flash hider because it hides the muzzle flash and effectively reduces felt recoil by 50% or more.  But unlike either of these devices, it also eliminates most of the muzzle blast (the loudest noise you hear), thus further concealing the location of the shooter.  There are several downsides to using a suppressor.  They add bulk, length, and weight to the firearm, thus throwing off its balance.  This added weight will displace your shot group, though properly fitted suppressors should not interfere with accuracy.  Lastly, they create back-pressure that will quickly foul the chambers of semiautomatic and automatic firearms, but having an adjustable gas system can help alleviate this issue. 

The short barrel rifle (SBR) and short barrel shotgun (SBS) are designed with handiness as their primary attribute., while mechanically they function the same as any other rifle, shotgun, or handgun.   Generally, any shotgun with a barrel under 18" and any rifle with a barrel under 16" is considered short barreled.  If the overall length of the firearm with its stock attached (or folding stock extended) is less than 26", it too is considered short barreled even if the barrel remains longer than 16"/18".   Attaching a shoulder stock to most handguns makes it a SBR, but exceptions are made for many older handguns such as the Luger, 'Broomhandle' Mauser, and Inglis Hi Power, or for handguns fitted with a 16" or longer barrel (Thompson Contender).  A short barrel is particularly desirable when you wish to store or transport a firearm in a vehicle, carry it through heavy brush, or maneuver it in the tight confines of a bedroom or hallway.  Unlike most AOWs, it is legal to switch back and forth between a pistol grip and shoulder stock.   

You can find 26" long pump-action smoothbore handguns in most any gun store.  Typically they sport a full pistol grip and 18" barrel, which makes them a bit ungainly.  ATF actually classifies them as "firearms".  They are not to be confused with the smooth bore pistol version of an AOW, which may be quite similar looking, but uses a shorter barrel.   Indeed, most pump action AOWs start life as smooth bore pistols and then are converted into AOWs.  Once a smooth bore pistol is registered as an AOW, it can be shortened - but no shoulder stock can be attached to it.  The AOW configuration provides greater maneuverability in the very close confines of a vehicle or tent, but reduces potential accuracy and slows recovery time between shots.  There are other types of AOWs, some of which have shoulder stocks, that are covered more thoroughly on our SBS/AOW page.  

The machine gun is a fully automatic firearm (including burst fire).  This means a single pull of the trigger discharges more than one shot.  Mechanically operated firearms, such as a Gatling Gun, do not fall within this classification.  Neither do so-called bump-fire techniques and specialty stocks or trigger activators that allow simulated full automatic fire.  The true machine gun combines the attributes of the rifle and shotgun (while the submachine gun combines the attributes of the pistol and shotgun).  They can be categorized by size and ammunition type, with the larger heavy and general purpose machine guns, normally firing at least a full-sized rifle cartridge, being the original and most effective machine guns of all.  Their excessive weights and supporting mounts make them very stable for firing out to ranges of a 1,000 yards or more.  The much lighter, handheld assault rifles typically employ smaller intermediate cartridges of less lethality and effective range.  And the submachine guns use even weaker, short range pistol ammunition.  Because these latter two types are less stable and more difficult to control in fully automatic fire, the net effect is their accuracy when fired fully automatic is seriously degraded except at very close pistol and buckshot shotgun range.   However, when fired semiautomatically, they can exceed the effective range and penetration of any pistol cartridge or buckshot.  This makes the assault rifle and submachine gun a Jack of all trades and master of none.  At close range the shotgun is deadlier; at medium to long range the rifle is superior.  In all cases the pistol is handier and more concealable, but much weaker and less accurate.  Yet the machine gun in its various forms holds a mystique that is difficult to justify.  Again we must default to Hollywood's very visual expression of this particular firearm as the personification of raw and deadly accurate power.  The truth is somewhat more subdued.  Any properly trained person can be taught to ignore the sound and fury of machine gun fire and focus instead on its true strengths and weaknesses.  The soldier knows he has a limited amount of ammunition with which to engage the enemy.  Does he waste it by filling the air with sound and fury, and in the process, expose his position?   Or does he conserve ammo for that necessary shot?  By contrast, should he break an ambush or charge into a room firing fully automatic and generating scatter-hell?   Certainly, to the novice the machine gun remains a powerful psychological force, one to be irrationally feared because we are conditioned by society to view it that way.  Thankfully, for the recreational shooter, or anyone who has been granted the opportunity to shoot one, these ponderous matters are of no relevance.  Even those who generally fear or despise firearms will quickly discover the adrenaline rush created by the false sense of firepower that "full auto" generates.  In conclusion, there simply is no denying that shooting machine guns is just plain fun!

Our services are available to all government military, law enforcement, and security organizations, private companies, firearms dealers, and private individuals who comply with the applicable Federal and State laws.  If you're a novice or need more clarification, then click LEGAL TIPS for a short history and explanation of the Federal laws controlling NFA manufacturing, distribution, and ownership.  WARNING: IF YOU ARE ACTIVE DUTY OR RESERVE MILITARY OR LAW ENFORCEMENT PERSONNEL, YOU ARE NOT EXEMPT FROM ANY OF THE FEDERAL REGULATIONS REGARDING POSSESSION AND MANUFACTURE OF NFA FIREARMS OR CERTAIN PARTS.  ONLY GOVERNMENT ENTITIES MAY REGISTER AND POSSESS SUCH DEVICES FOR ISSUE TO AUTHORIZED PERSONNEL.  ANYONE ATTEMPTING TO ACQUIRE NFA FIREARMS OR CERTAIN PARTS ON BEHALF OF AN ORGANIZATION MUST DO SO USING AN AUTHORIZATION LETTER PREPARED ON ORGANIZATIONAL LETTERHEAD, AND SIGNED BY YOUR COMMANDER, POLICE CHIEF, SHERIFF, OR DEPARTMENT HEAD.    

For ordering information click ORDERS, or to learn more about our company, click HISTORY.  To view our product line and services, select anyone of the icons below.  If you can't find what you're looking for, please contact us at  We enjoy answering client questions and should be able to build a custom suppressor or firearm tailored to fit your individual needs.  After all, that's our specialty.  And as always, enjoy safe shooting!

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