Sig 8902058 9mm 4.3 Thrd 1/2-28
$210.63
$229.99
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$19.36
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The Sig Sauer 8902058 is a factory 9mm threaded barrel built as a direct replacement for the P365 platform. Engineered with 1/2-28 right-hand threads and a 4.3-inch configuration, this barrel opens up suppressor and compensator options for shooters looking to expand their P365's capabilities. Whether you're chasing a quieter shot or managing recoil on the range, a quality threaded barrel is the foundation—and Sig's factory engineering means you're getting precision fit and reliability from the manufacturer that knows the gun best.
This barrel works on P365, P365-XL, and P365-XMACRO (non-compensator) slide assemblies, giving you flexibility across the most popular compact 9mm platform in the market. Sig's factory heat-treat process ensures the barrel handles the rigors of frequent shooting and suppressor use without premature wear. The loaded chamber indicator (LCI) witness hole is preserved, so you retain the factory safety feature that lets you verify a round in the chamber at a glance—a small detail that matters in a carry gun.
The barrel comes with a thread protector cap, keeping the threads clean and safe during storage or transport when you're not running a suppressor or comp. One thing to know: if your P365-X has the 3.1-inch slide, the 4.3-inch barrel will protrude further than it would on the standard 3.7 slide, and it won't work with the P365-FUSE assembly. Check your slide length before ordering.
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