AB Prototype SIG P320 O-Ring, Replacement

AB Prototype

$1.99
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AB Prototype Replacement O-Ring for SIG Sauer P320 takedown lever, NEW.

This is a new REPLACEMENT O-Ring (NOT FACTORY) for the SIG P320 (Retains and seals the takedown lever). This will work with all P320s in 9mm, 40SW, 357SIG and 45ACP (non-manual safety and manual safety versions). 

It's a quality VITON® fluoroelastomer o-ring (black) with excellent chemical-resistant properties and temp range of 0°-400° F. 

Includes: 1 Replacement O-Ring, NEW. (NOT FACTORY). Loose, bulk packaging. Grease may be present. No other parts are included. NOT FOR AIRSOFT

Installation is available for an additional charge.

Complete lower parts kit can be purchased HERE

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  • 2
    Sig P320 o ring - not correct size

    Posted by John on Jan 25th 2021

    Not the right size. Talked to Sig, they said I had to send CO2 gun to them for service. They were unaware of 3rd party sales of o ring or other internal parts. AB Prototype response - Thanks for feedback John. These are the correct size for the P320 pistol. The fit to CO2 guns is unknown.

  • 5
    SIG P320 O-RING, REPLACEMENT

    Posted by Prentiss L Rowell on Sep 29th 2020

    Rounding up part for my next Sig P320 build. Part are hard to come by these days.