---
title: "ASYM Precision’s New 9mm Solid Defense X Ammo"
description: "ASYM Precision Ammunition, made by Stan Chen Customs of Durango, Colorado, beefs up its Solid Defense X (SDX) line of handgun ammunition with the new 9mm SDX (Solid Defense X) loaded with a 115 grain Barnes TAC-XP +P bullet. All of ASYM Precision's SDX ammo features the solid copper, ultra premium Barnes TAC-XP bullet."
date: "2011-10-24"
modified: "2011-10-24"
authors:
  - name: "Brian McCombie"
    link: "https://www.outdoorlife.com/authors/brian-mccombie/"
url: "https://www.outdoorlife.com/blogs/gun-shots/2011/10/asym-precisions-new-9mm-solid-defense-x-ammo/"
categories:
  - "Ammo"
  - "Guns"
  - "Handgun Ammo"
---

# ASYM Precision’s New 9mm Solid Defense X Ammo

![](<https://www.outdoorlife.com/wp-content/uploads/2019/01/23/BGKBMEQFEHUVJNF4CHTNEXI7HU.jpg>)

ASYM Precision Ammunition, made by Stan Chen Customs of Durango, Colorado, beefs up its Solid Defense X (SDX) line of handgun ammunition with the new 9mm SDX (Solid Defense X) loaded with a 115 grain Barnes TAC-XP +P bullet.

All of ASYM Precision's SDX ammo features the solid copper, ultra premium Barnes TAC-XP bullet.

The bullet offers:

• Phenomenal terminal performance - impressive tissue damage and wound cavities

• Reliable expansion (the .45 ACP TAC-XP version is rated at an impressive 1" expansion)

• Deep penetration, even through intermediate barriers such as glass, sheet metal and denim

• No core/jacket separation

All this with a bullet that is certified lead free.

The SDX line also comes in .45 and .380 Auto offerings. [Stan Chen](<https://store.chencustom.com/>) Customs makes customized 1911's.