Because the rifle uses a closed-bolt system, red dot sights are the ideal choice for maintaining situational awareness. Additionally, swapping the standard recoil spring for a slightly stiffer variant can help manage the cyclic action, particularly when using higher-pressure defensive ammunition.
SUB-2000 Recoil Spring Upgrade Guide for Better Cyclic Action
5-inch barrel and a fixed front sight post with a adjustable rear sight. 40 S&W, the standard barrel length can be swapped to achieve different ballistic properties.
Ergonomic and Handling Upgrades Grip Enhancements One of the most common Kel-Tec SUB-2000 mods focuses on improving the grip geometry. This category of Kel-Tec SUB-2000 mods requires a reliable mounting solution, such as a rotary or offset mount, to ensure the optic is positioned correctly for eye relief.
SUB-2000 Recoil Spring Upgrade Guide
The SUB-2000 operates using a simple blowback system and is constructed with a mix of polymer and steel components. 40 S&W chambering, offers a compact package that does not compromise on ballistic performance.
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