Welcome to our FAQ section, where you will find answers to the most frequent questions about our products and services. We have designed this section to provide you with clear and concise information to help you get the most out of our product.
Our 1911 and PX-9 pistols with dovetail style sights may be replaced, but we recommend a competent gunsmith perform any work on your pistol, as fitting maybe required.
1911 Army and Service Models use 70 Series Govt. dovetail rear and narrow tenon stake-on front.
1911 Single Stack Carry and Duty Models use Tisas® Style dovetails front and rear.
1911 Double Stack Carry and Duty Models use Tisas® Style dovetail front and Glock® dovetail rear.
Match and D10 models use a Bomar® Cut rear and Tisas® Style front dovetail.
PX-9 Generation 1/2 Pistols use Smith & Wesson M&P 9/40® Fullsize Sights.
PX-9 Generation 3 Pistols use Glock® 17 Sights. (PX-9 Gen 3. Models will Co-Witness with Std. Height Sights w/ Most Optics)
Yes, most firearms will benefit from a good break-in period. When you receive your firearm: read your instruction manual for a good overview of the controls and other information, ensure your firearm is unloaded, disassemble your firearm, clean, and properly lubricate it per the instructions, cycle the action a few times to ensure all parts are moving freely. Head to the range and run some high-quality ammunition through your firearm. Typically, you will see performance and reliability become consistent after the first initial uses of the firearm. Clean and lubricate as needed during break-in.
Pistols typically will need 100-300rds of ammunition, we recommend FMJ ammo for break-in.
Several factors can have an effect on your 1911's reliability. Here are few things to look at:
1. Improper Grip: Use a firm grip as high on the beaver-tail as you can, and keep a straight wrist as you fire the pistol.
2. Ammunition: Use high-quality ammo with a properly shaped bullet. Hollow Points with a flat or blunt tip may cause jamming, find a more
Many aftermarket companies offer holsters specifically for the PX-9 GEN3 and PX-9 Carry Pistol. Please visit https://sdsimports.com/shop/holsters/ for available models.
Crossbreed Holsters
Simply Rugged
CyTac
Urban Carry
Be advised that PX-9 Carry models will fit into holsters designed for the PX-9 Duty and Tactical models.We have also found that some holsters designed for the Sig Sauer P320 and Springfield Xdm will work with little to no modification. Please test fitment before carrying
Our standard 1911's in .45acp use an un-ramped barrel to the Colt/USGI Specs.
The 1911 D10 in 10mm uses a Clark/Para ramped barrel.
Our 9mm 1911's use a Clark/Para ramped barrel.
Yes, you may fire +P ammunition in your Tisas Pistol. However is loaded to produce more velocity, pressure and power than standard ammunition. This will result in more recoil and wear on parts of your firearm more than standard ammunition.
1911's - Most standard 1911 magazines in the appropriate caliber will work in your Tisas 1911 Pistols. In addition to our OEM magazines, we highly recommend; Mec-Gar, Wilson, Ed Brown, Metal-Form, Brownells and Chip McCormick.
PX-9
- Our PX-9 Duty & Tactical are fed from a Sig Sauer P226® pattern magazine. We recommend our OEM magazines along with Mec-Gar and Checkmate.
- Our PX-9 Carry Models are fed from Sig Sauer P228® pattern magazine. We recommend our OEM magazines along with Mec-Gar and Checkmate.
Tisas does not use any cast metal parts on our firearms. The use of quality MIM parts on some models was used in prior generations of our 1911 products but in mid-2022 we began moving away from use of those parts. Tisas models produced after 11/1/2022 contain machined internal parts with the exception of the recoil spring plug which will continue to be a MIM part at a time to be determined.
Although Tisas USA products are covered by a warranty and the Tisas Lifetime Service Plan, we do not cover work done by 3rd parties that change/alter/modify the factory safety features, fire control or operating system in anyway. Any Tisas product returned for warranty work and/or repair that is found to be altered beyond factory parameters or modified in such a manner that is no longer covered by the warranty or TLSP shall be returned to the customer at their expense. Should a customer request that Tisas USA repair or replace a firearm(s) not covered by the warranty or TSLP, our gunsmiths may choose to perform repairs, at our discretion and at the customers expense.
When mounting an optic on your Tisas optics ready firearm that inclides 1911 and PX series, the allen bolts should be torqued to a min. 10in lbs/max 13in lbs.
Below is a list of the common spring weights of our 1911 pistols.
1911 Duty .45ACP Recoils Spring: 16lb.
1911 Duty 9MM Recoil Spring: 14lb.
1911 Carry .45ACP Recoil Spring: 18lb.
1911 Carry 9MM Recoil Spring: 16lb.
1911 Duty 10MM Recoil Spring: 23lb.
1911 All Models Hammer Spring: 23lb.
Some models are finished with high-quality Cerakote in the following colors:
Raider Models: H267G Magpul® FDE
Army/Tank Commander: H210 Sig® Dark Grey
PB Models: H226 Patriot Brown
Black Models: H146 Stealth Black
Night Stalker Models: H337 Platinum Grey
Carbon Steel models are Cerakote over Manganese Phosphate. Aluminum models are Cerakote over hardcoat anodized.
Tisas and MAC 1911 Pistols frames and slides are forged and machined from 42CrM04 Carbon Steel, 420A Stainless Steel and/or 7075 T6 Aluminum depending on model and configuration.
The Tisas Builder Kits require an intermediate working knowledge of gunsmithing techniques and understanding of the 1911 platform to assemble. Fitting of the frame and slide will require attention to detail and special tools or supplies. We recommend 800-grit lapping compound followed by Flitz polishing compound for fitting the frame to the slide.
Frame/Slide Lapping Info:
The slide and frame should fit with no resistance and move freely with little pressure. Apply thin layer of 800 Grit lapping power to the frame rails and hand cycle the slide back and forth until parts move with out resistance. Wash or clean the parts with a soapy water and repeat till desired fit is accomplished. Repeat with Flitz Polishing compound and repeat cleaning process, then lubricate the parts as needed to prevent corrosion until finishing.
Other small parts may require minor fitting to ensure proper fit and function as needed. The use of a Dremel or other powered rotary tool is not recommended and all fitting/polishing should be done by hand with manual tools.
There are various books, videos and online resources to guide you through the process and we suggest educating yourself properly or having a competent gunsmith assist you with assembly.
Tools Required:
1/16" Roll Punch (To Install Front Sight Pin)
5/64" Allen Wrench (Install Rear Sight Set Screw)
Medium Flat Head Screwdriver (Install Grip Screws)
Small Flat Head Screwdriver (Install Magazine Release)
Brass Gunsmith Punch Set (Driving Various Pins or Detents)
1911 Sight Pusher (Install Dovetail Sights) **Using Hammer and Punch may damage the sight or slide and is not recommended**
1911 Grip Bushing Tool (Install Grip Bushings)
800 Grit Lapping Compound (Lapping Frame to Slide)
Flitz Polishing Compound (Finishing Lapping Frame to Slide)
Dish Soap or Mild Degreaser ( For Cleaning Parts After Lapping)
Blue Thread Locker (Secure Grip Bushing Only and Small Set Screws, DO NOT THREAD LOCKER GRIP SCREWS!!!)
Small File Set (Remove burrs and other minor material for optimum fit)
CLP or Gun Oil (Lubricate Parts for Function and Corrosion Resistance)
Finish (Cerakote, Duracoat, Gun Blue or other Finish to Protect Metal Parts)
Legal Disclaimer:
Tisas USA or SDS Imports shall not be liable for any misuse, injury or death from a improperly assembled Builder Kit 1911. Tisas USA or SDS Imports does not extend any warranty or promise to repair any modified or assembled Builder Kit 1911. Buyer and/or End-User assume all risks associated with the safety, function and subsequent dangers associated with process to build, modify or use of a Builder Kit 1911.
Below is a list of barrel twist for each caliber.
10mm 1:16'' RH
9mm 1:10'' RH
38 Super 1:16'' LH
45acp 1:16'' RH
PX-9 Magazine Well M3-0.5x10MM Metric Flat Socket Screw
PX-9 Optic Cut Cover Plate M3-0.5x8MM Metric Flat Socket Screw
PX-9 Optic Mount M3-0.5x8MM Metric Flat Socket Screw. Longer screws may be needed depending on optic mfg.
Tisas 1911 Optic Cut Cover Plate M3-0.5x5MM Metric Cap Socket Screw
Tisas 1911 Optic Mount M3-0.5x8MM Metric Flat Socket Screw. Longer screws may be needed depending on optic mfg.
MAC 9 Double Stack Optic Cut Cover Plate M4-0.7x5MM Metric Cap Socket Screw
MAC 9 Double Stack Optic Mount #6-32x5/16” or #6-32x 3/8” or #6-32x 7/16”. Longer screws may be needed depending on optic mfg.
Tisas Carry 1911 have a 3-slot picatinny rail that may not be compatible will full-size duty lights without modification to the light or mounting key, these may include the X300, TLR-1, P.ID. Use of sub-compact light is recommended such as the TLR-7 or similar light designed for shorter rails.
No. Unfortunately we do not offer any trade ins or exchange programs for older model firearms.
Our shotguns have internally threaded barrels that utilize Benelli/Mobil® pattern choke tubes.
Chokes can be identified by the number of notches present on the muzzle end.
The following are guideline for slecting the proper choke tube for various ammo types.
Skeet/Cylinder/Improved Cylinder: Rifled Slugs, Buckshot and Bird Shot.
Modified/Full: Buckshot or Bird Shot.
Important Info Regarding Steel Shot
The choke (before constriction) in all modern shotguns has been established based on the pattern performance of shot shells loaded with lead shot. When using steel shot shells, you will notice a different performance in pattern density versus the established lead shot pattern, because the steel shot is harder and lighter than lead shot.
You should be aware of the following differences and cautions:
Never shoot steel shot loads in a full choked barrel or an improved modified choked barrel. Doing so, may cause the barrel to swell or rupture. In general, steel shot fired with a modified choke will produce the equivalent of a lead full choke pattern. This will be true of all steel shot sized up to and including no. 2. The established improved cylinder chokes will produce the equivalent of a (lead) modified pattern. All steel shot sized larger than no. 2, and including special sized such as F, T, etc, should be used only with improved cylinder chokes. These steel shot sizes, when used in an improved cylinder choke, will produce equivalent to (lead) full choke patterns. The established cylinder choke or bore will produce the equivalent of a modified (lead) pattern. Additional information concerning the use of steel shot is available from the ammunition companies.
When using aftermarket choke tubes, check the mfg. recommendations prior to use.
Customizing your MAC firearm is a way to enhance the functionality and performance, but may also void your warranty, so proceed with caution. SDS Imports/MAC suggest any/all work is completed by a competent gunsmith.
MAC 1911 Single Stack Pistols
Our single stack models are built using Colt® Series 70® pattern parts, so many aftermarket options are available, minor fitting required for proper fit and function may be required.
MAC 1911 Double Stack Pistols
Gen 1 and 2 STI/Staccato® pattern grip modules, minor fitting may be required for proper fit.
All popular FULL SIZED STI pattern 17rd. capacity or greater pattern magazines will work.
Internals are Colt® Series 70® pattern except for the trigger and magazine catch.
All Popular STI pattern triggers are compatible, minor fitting may be required for proper fit.
Gen 2 STI/Staccato type magazine releases are compatible with MAC/Tisas Grip Modules only.
All popular triggers such as the Fusion Firearms and Atlas triggers will work, minor fitting may be required.)
Customizing your MAC firearm is a way to enhance the functionality and performance, but may also void your warranty, so proceed with caution. SDS Imports/MAC suggest any/all work is completed by a competent gunsmith.
MAC 1014 Series Shotguns
MAC 1014 shotguns are compatible with most O.E.M. and aftermarket parts designed to fit Benelli® M4 series shotguns.
MAC 2 Series Shotguns
MAC 2 shotguns are compatible with most O.E.M. and aftermarket parts designed to fit Benelli® M2 series shotguns.
We do not guarantee compatibility with all parts from 3rd party manufacturers and some parts may require fitting, installation by a competent gunsmith is recommended.
To remove, loosen or tighten the stock on your MAC-1014 or MAC-2 shotgun please do the following:
Remove the butt pad that is secured by 2 (two) phillps head screws, be sure to use a JIS bit to prevent stripping.
Once the butt pad is removed a 6mm hex bolt will be visible, which can be tightened or loosened as needed.
MAC JSOC 1911
LPA/BOMAR Pattern Curt Rear
Tisas Pattern Dovetail Front
MAC 1911 DS Models
Optic Cover Plate: Tisas Pattern Dovetail Rear
Optic Mounting Plate: Glock® Pattern Dovetail Rear
Front Sight: Tisas Pattern Dovetail Front
All Military Armament Corporation firearms imported into the US are designed to comply with all Federal regulations as defined in 18 U.S. Code § 922(r). Be advised that altering your firearm in any manner beyond the factory configuration by installing magazines/tubes that increase the ammunition capacity over 5rds. and/or adding "not suitable for sporting purposes" features such as an adjustable or folding stock, bayonet lugs or other features that are commonly found on "Assault Weapons" is a violation of 18 U.S. Code § 922(r).
MAC-5 and MAC-5k Models Ship from the Mfg with the bolt gap set to the following specs:
0.25MM - 0.45MM. +/- .05MM
0.010" - 0.018". +/- .002"
Please be advised that when measuring bolt gap to use a high-quality set of feeler gauges, and the firearm must be unfired, and all internal parts clean from any dirt, carbon, or fouling. Firing the weapon with Binary Triggers, Suppressed, or using Higher Velocity/Heavier Ammunition under heavy volumes of fire may cause excessive to wear internal components result bolt gap may need to be checked and adjusted by the use of +/- rollers to ensure proper function of the weapon.
Due to import restrictions set forth by the BATFE, the MAC-5 and MAC-5k are built with an internal block to prohibit the use of Full Auto parts on these firearms. Altering the internals of the MAC-5/5k firearms in anyway will void your warranty and is not recommended. Any alterations may result in violations of the NFA/GCA and could lead to arrest, fines, and other legal penalties.
The MAC 9 DS pistols for 2025 utilize the Agency Optic System (AOS) 1911/1911 Double Stack adapter plates. An AOS RMR adapter plate is included with your pistol.
Cover plate hardware is 6-48 thread pitch.
**For hardware to mount your optic to the adapter plate, please contact the Optic Mfg. for replacements/spares.
Agency Titanium Screws (For Mounting Optic to Plate)
https://www.agencyarms.com/product/titanium-aos-optic-mounting-screws/
Below is a list of the common spring weights of our 1911 pistols.
1911 JSOC .45ACP Recoils Spring: 16lb.
MAC 9 DS-D/DS-D COMP 9MM Recoil Spring: 14lb.
MAC 9 DS/DS COMP 9MM Recoil Spring: 16lb.
All Models Hammer Spring: 23lb.
Our shotguns have internally threaded barrels that utilize Benelli/Mobil® pattern choke tubes.
Chokes can be identified by the number of notches present on the muzzle end.
The following are guideline for slecting the proper choke tube for various ammo types.
Skeet/Cylinder/Improved Cylinder: Rifled Slugs, Buckshot and Bird Shot.
Modified/Full: Buckshot or Bird Shot.
Important Info Regarding Steel Shot
The choke (before constriction) in all modern shotguns has been established based on the pattern performance of shot shells loaded with lead shot. When using steel shot shells,you will notice a different performance in pattern density versus the established lead shot pattern, because the steel shot is harder and lighter than lead shot.
You should be aware of the following differences and cautions:
Never shoot steel shot loads in a full choked barrel or an improved modified choked barrel. Doing so, may cause the barrel to swell or rupture. In general, steel shot fired with a modified choke will produce the equivalent of a lead full choke pattern. This will be true of all steel shot sized up to and including no. 2. The established improved cylinder chokes will produce the equivalent of a (lead) modified pattern. All steel shot sized larger than no. 2, and including special sized such as F, T, etc, should be used only with improved cylinder chokes. These steel shot sizes, when used in an improved cylinder choke, will produce equivalent to (lead) full choke patterns. The established cylinder choke or bore will produce the equivalent of a modified (lead) pattern. Additional information concerning the use of steel shot is available from the ammunition companies.
When using aftermarket choke tubes, check the mfg. recommendations prior to use.
Yes, most firearms will benefit from a good break-in period. When you receive your firearm: read your instruction manual for a good overview of the controls and other information, ensure your firearm is unloaded, disassemble your firearm, clean and properly lubricate it per the instructions, cycle the action a few times to ensure all parts are moving freely. Head to the range and run some high-quality ammunition through your firearm. Typically you will see performance and reliability become consistent after the first initial uses of the firearm. Clean and lubricate as needed during break-in.
Shotguns typically will require 50-100rds of ammunition, we recommend a heavy load of 1oz or heavier for break in.
The receiver, barrel, operating mechanism and fire control parts are machined from metal. The stock, hand-guard, and lower are made from a impact resistant polymer.
No, we do not recommend the use of non standard 12 Gauge ammo such as mini-shot shells in our firearms. Our firearms are made to be used with standard 2 3/4", 3" or 3.5" shells depending on model. Refer to your owners manual for more information.
Our gas piston operating system on certain models can be used with the factory installed "Light" piston for most loads 1 1/8oz and under 1600fps velocities. For loads heavier than 1 1/4oz and faster than 1600fps loads, the "Heavy" piston is recommended.
A commonly available choke tube thread adpater is required. It will replace the Benelli/Mobil pattern choke tube installed in the barrel and have extended threads for attaching muzzle brakes or suppressors. Carolina Shooter Supply and many Supressor Mfg. offer this in the Benelli/Mobil pattern.
The design of the Turkish T-1919 pattern magazine allows it to be “over-inserted” in certain models of firearms. This can cause feeding issues and/or damage to the magazine. To mitigate this, when inserting the magazine, it is not necessary to seat the magazine with force. Pulling downward on the magazine will often engage the magazine catch in the proper manner if the magazine was over-inserting during initial loading.
If the magazine is stuck, before attempting to remove it, ensure there are no live ammunition in the firearm. To remove any live ammunition from the magazine, you can remove the base plate by pressing in the “O” and sliding it forward (The Star is just decorative and doesn’t need to be pushed to remove the base). Once it has been cleared, hold the magazine release button and pull down on the magazine.
The Titan and Hammer are not intended to use chokes from the factory. The included barrel is a fixed "cylinder bore" choke constriction, and not threaded to accept choke tubes.
The bolt connecting the upper and lower will need to be tightened with the regular maintenance. We do not recommend Loctite since this step is part of the disassembly for cleaning.
All Military Armament Corporation firearms imported into the US are designed to comply with all Federal regulations as defined in 18 U.S. Code § 922(r). Be advised that altering your firearm in any manner beyond the factory configuration by installing magazines/tubes that increase the ammunition capacity over 5rds. and/or adding "not suitable for sporting purposes" features such as an adjustable or folding stock, bayonet lugs or other features that are commonly found on "Assault Weapons" is a violation of 18 U.S. Code § 922(r).
No. The L9A1, P-35 and GP-35 series pistols do not have a magazine disconnect feature.
The INGLIS L9A1, P-35 and GP-35 pistols use FN/Browning® Hi-Power Pattern Magazines. MEC-GAR MGBRHP sku's are commonly available.
Most Hi-Power compatible grips will fit the P/GP-35 Series pistols. Due to the lanyard loop on the L9A1, some modification to the grips maybe required.
INGLIS L9A1, P-35 and GP-35 pistol have Browning® Hi-Power pattern dovetail cuts.
If you have not found any answers that you had in the above section, then please fill out the form below or call us at:
(865) 604-6894
(Monday through Friday 8:30am – 4:30pm)