The SIG P320 and the SIG P250 are two popular handguns from the same manufacturer. The P320 is chambered in 9mm and .40 S&W, while the P250 is chambered in .45 ACP. But the question remains – will the P320’s Caliber X-Change fit into the P250? The answer is yes, but only with the correct conversion kit. With the right kit, you can easily convert your P250 to fire the same caliber as your P320.
Step-by-Step Guide to Converting Your Sig P250 to a P320 Caliber X-Change
The Sig P250 and the Sig P320 have many similarities and differences, but the most notable difference is that the P250 is chambered in .40 S&W and the P320 is chambered in 9mm. If you own a P250 and want to convert it to a P320, you can do so using Sig’s Caliber X-Change kit. Here is a step by step guide:
- Start by removing the slide from the frame. Make sure the firearm is unloaded before you do this.
- Remove the barrel, guide rod and recoil spring assembly from the slide.
- Insert the new barrel, guide rod, and recoil spring assembly from the X-Change kit into the slide.
- Install the new slide onto the frame.
- Insert the new magazine that comes with the kit into the frame.
- Pull the slide back and release it to chamber a round.
- Fire the weapon to make sure it is functioning properly.
- Repeat Steps 1-7 if you want to convert the firearm back to its original caliber.
Now that you have successfully converted your Sig P250 to a P320, you can enjoy shooting it with the new caliber. Make sure to clean and lubricate your firearm regularly to keep it functioning properly.
The Sig P250 and the P320 Caliber X-Change have some major difference
The Sig P250 and the P320 Caliber X-Change are two completely different handguns, despite the fact that they are both manufactured by Sig Sauer. The P250 is a double-action/single-action, hammer-fired handgun, while the P320 is a striker-fired handgun. P250 is available in 9mm, .40 S&W, and .45 ACP, while the P320 is available in 9mm, .357 Sig, .40 S&W, and .45 ACP.
This gadget has a polymer frame and a steel slide, while the P320 has a full stainless steel frame and a stainless steel slide. The P250 has a capacity of 15+1 rounds in 9mm, 12+1 in .40 S&W, and 10+1 in .45 ACP, while the P320 has a capacity of 17+1 rounds in 9mm, 14+1 in .357 Sig, 13+1 in .40 S&W, and 10+1 in .45 ACP.
The P250 has an overall length of 7.2 inches and a barrel length of 3.9 inches, while the P320 has an overall length of 8 inches and a barrel length of 4.7 inches. Finally, the P250 has a weight of 28 ounces unloaded, while the P320 has a weight of 29.6 ounces unloaded.
The Challenges Associated With Converting Your Sig P250 to a P320 Caliber X-Change
The conversion of a Sig P250 to a P320 Caliber X-Change can be a daunting process. It requires a lot of knowledge and understanding of the parts and components of the firearms. First and foremost, the user must be familiar with the differences between the two firearms. This includes knowing the differences in the magazine capacities, the sizes of the slides and frames, the barrel lengths, and the caliber sizes. Additionally, the user must have a thorough understanding of the parts that make up the firearm and how they interact with each other.
Once the user has familiarized themselves with the parts and components of the firearms, they must then find the necessary parts and components to complete the conversion. This includes the P320 X-Change kit, the P320 recoil spring assembly, the P320 slide and barrel assembly, and the P320 magazine. All of these parts must be compatible with each other and must be installed correctly in order for the firearm to function properly.
Next, the user must complete the installation of the parts and components. This includes attaching the slide and barrel assembly onto the frame, inserting the recoil spring assembly, and attaching the magazine. The user must also ensure that all of the parts are properly secured and that no parts are missing.
Understanding the Differences Between a Sig P250 and a P320 Caliber X-Change
The Sig P250 and the P320 Caliber X-Change have some major differences that need to be taken into consideration when deciding between the two. The P250 is a hammer fired pistol, while the P320 is striker fired. This means that the P250 requires the user to manually cock the hammer back in order to fire it, while the P320 is ready to fire immediately after a trigger pull.
Also, the P250 is an all-metal frame, while the P320 is a polymer-framed pistol. This means that the P250 is heavier and more durable than the P320. Additionally, the P250 has a lot of different parts and requires more maintenance than the P320, which is easier to take apart and put back together.
The P320 Caliber X-Change also allows users to quickly and easily switch out the caliber of the pistol. This means that the user can quickly switch out the barrel and magazine in order to shoot different calibers. The P250 does not offer this feature.
Overall, the Sig P250 and the P320 Caliber X-Change have some major differences that should be taken into consideration when deciding between the two. The P320 is easier to maintain and can quickly be switched to different calibers, while the P250 is a more traditional pistol with a metal frame and requires more maintenance. Ultimately, the choice between these two pistols depends on the user and their needs.
What to Consider Before Converting Your Sig P250 to a P320 Caliber X-Change
Before converting your Sig P250 to a P320 Caliber X-Change, there are a few things to consider. First, the P320 X-Change kit is only compatible with P250 Full-Size and Compact models. If you have a subcompact P250, the kit will not be compatible. Secondly, the kit will not allow you to convert your P250 to a different caliber. If you wish to do so, you will need to purchase a new slide and barrel in the desired caliber. Additionally, you should consider the cost of the kit.
The P320 X-Change kit is not cheap and may not be worth the cost for a simple caliber change. Finally, you should consider the legal implications of the conversion. Depending on where you live, the conversion may be considered a modification to a firearm, which could be illegal. Therefore, you should consult with your local laws prior to making any changes to your P250.
Frequently Asked Questions [FAQs]
Yes, you can use the P320 Caliber X-Change Kit to convert your P250 Sig. The kit includes a complete slide assembly, barrel, recoil spring, magazine and all other parts necessary to turn your P250 Sig into a P320.
Yes, the installation of the P320 Caliber X-Change Kit is relatively easy and straightforward. All you need to do is to remove your existing slide assembly and replace it with the new P320 slide assembly that is included with the kit.
The P320 Caliber X-Change Kit is designed to accept 9mm, .357 SIG, .40 S&W, and .45 ACP ammunition.
No, the P320 Caliber X-Change kit is not compatible with the P250 Sig. The P320 and P250 use different frames and slide assemblies, so the kit will not fit the P250.
Yes, there are conversion kits available for the P250 Sig. There are kits available that will allow you to convert the P250 to 9mm, .40 S&W, and .45 ACP. However, these kits will not work with the P320 Caliber X-Change kit.
Conclusion
Based on the research, it appears that the Sig P320 Caliber X-Change kit will not fit the Sig P250 as the two models have different frames. Therefore, it is not recommended to try and install the P320 X-Change kit on the P250.

A. Wilcox Head is a lifelong shooter, hunter, and firearms enthusiast. Head grew up in a family where firearms were a way of life, and from an early age, he was taught the importance of firearm safety, accuracy, and proper hunting techniques.