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.
Carry and Duty Models use Novak® Style dovetails front and rear.
Match and D10 models use a Bomar® Cut rear and Novak® 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 Pistol.

Crossbreed Holsters
Simply Rugged
CyTac
Urban Carry

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 is fed from a Sig Sauer P226® 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 PX-9 GEN3 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:
Grey Models H210
Black Models H146
Night Stalker Models H337

Carbon Steel models are Cerakote over Manganese Phosphate. Aluminum models are Cerakote over hardcoat anodized.

42CrM04 Forged Carbon Steel or 420A Forged Stainless Steel.

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