P320 Engraving

(6 reviews) Write a Review
Calculated at Checkout
Adding to cart… The item has been added

Engraving for a SIG P320 FCU

This is a CNC Machining service to engrave your personal information and serial number on your existing or purchased P320 FCU. 

We precision CNC machine your information with a 1/32" ball endmill to a depth exceeding the current ATF required .003" depth (and 1/16" minimum height). Serial number will show up in the window of the P320 grip module and manufacture information will be engraved on opposite side of FCU (not visible after assembly).

No parts are included with this service. FCU shown for reference only. No additional holes are cut or drilled!

Includes:  SERVICE ONLY to CNC engrave your frame on two sides. You are not purchasing any products with this service. Lead time can be up to 2 weeks, but is often less. (JSD MUP-1 is optional, use checkbox).


FRONT SIDE: Serial Number (limited to 9 characters for the P320).

BACKSIDE: Manufacturer name (or your full name), CITY, STATE, 

You can also send us your existing 80% P320 FCU for engraving (MUST BE IN 80%, UNMODIFIED CONDITION). Contact us to arrange shipping (We are a licensed Firearms Dealer). We will only receive completed frames that already have a serial number.

Shipping charges will be charged at checkout for return shipping. The customer is responsible for charges associated with shipping the frame to AB Prototype.

FCU Parts, Barrel, Slide, Safety Lever, etc. are obviously NOT INCLUDED.

PLEASE NOTE: AB Prototype cannot guarantee compliance with state or Federal requirements. The customer is responsible for compliance with all state and Federal requirements. Any modifications to any frame will most likely void any existing manufacturer warranty. AB Prototype does not provide any additional warranty, neither expressed nor implied.

6 Reviews Hide Reviews Show Reviews

  • 5
    P320 Engraving

    Posted by M.B. on Jun 17th 2022

    I've had several engravings done. Great communication from Alex throughout the whole process. Excellent work, fast shipping. Thank you.

  • 5
    Excellent service

    Posted by carlos marquez on Apr 4th 2022

    Thank you

  • 5
    MUP-1 engraving

    Posted by Allen on Mar 30th 2022

    Job well done and fast shipping!

  • 5

    Posted by TONY AYALA on Feb 17th 2022


  • 1
    P320 engraving

    Posted by Chad on Jan 8th 2022

    The entire point of this is to have just the serial number showing when the grip module is over it. Usually you get name and city on one side, just the serial number on the other side. AB Prototype made the bizarre decision to engrave name, city, state, and serial number on ONE SIDE, so it's all crammed up against each other and extra letters show through the window. Incredible that ANYONE with a brain would think that's acceptable. Will not be doing business with them again. Full stop. AB Prototype Response: Hello Chadd, thanks for the feedback. You selected the option to have all the engraving on ONE SIDE.

  • 5
    P320 Engraving

    Posted by Darby Reid on Apr 6th 2020

    Awesome! Great job, followed by fast shipping! They make it too easy!