Tisas Duty Builders Kit, .45ACP

Tisas USA
Dealer Sales Only
(5 reviews)
Current Stock:

The Tisas Duty Builders Kit is a complete set of parts to build a 1911 in .45ACP. This kit is based of the popular Duty B45 model and includes everything needed to assemble a functional pistol with some basic to moderate fitting.

Duty Frame and Slide are unfinished raw carbon steel.
5” .45ACP Barrel is hard-chromed.
Small Parts are cerakote black.
Pins and Spring are phosphate coated.

For more information and tips for assembling please refer to the FAQ.

**These kits as sold as it and not covered under the TLSP. Required assembly, fitting and  testing of the kit should be done by a competent gunsmith or trained professional.**


Firearms cannot be shipped to certain states or localities and must be shipped to a valid FFL in the state you reside, please click the link for more information: Online Firearms Purchase Information


WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to : www.P65Warnings.ca.gov


  • 5
    Duty Builders Kit

    Posted by Robert McCarthy on 21st Jun 2024

    Great kit. Easy assembly. Used a small triangular file to trim the front and rear sights for a snug press fit. The mainspring housing pin was extremely snug. Used sand paper to reduce the diameter. After assembly i found the grip safety is lighter than I expected. I ordered a replacement sear spring from Brownells to tighten up the feel. I will again sand the housing pin to improve the fit allowing for installation and removal without the use of a hammer and punch. Fired 50 rounds no problems reasonable offhand accuracy! Thanks for a great product Bob

  • 4
    1911 builders kit

    Posted by jason taylor on 29th Apr 2024

    Nice kit. Minor work to the grip safety spring. Everything good and tight.

  • 5
    Pistol build kit

    Posted by Robert Evans on 28th Apr 2024

    Wow for the money in today’s economy this is a steal. Fast shipping. Thank you. Robert

  • 5
    Building kit

    Posted by Dicki Franklin on 26th Aug 2023

    The kit was well packaged! Just sent slide frame for ceracote . Frame to slide fit was better than expected. Will build after it’s coated!

  • 4
    1911 duty builders kit

    Posted by Michael Waugh on 9th Aug 2023