SIG Sauer P320/P250 Caliber X-Change Kit

posted on June 10, 2016

Many years ago, I picked up a SIG Sauer P250 in .45 ACP. At the time, as a resident of Massachusetts subject to the vagaries of the "Approved Handgun Roster," it was the only compact, polymer-frame .45 ACP available. The modular nature intrigued me, and I picked up a sub-compact frame, slide and barrel to investigate as well.

Flash forward to the introduction of the P320, and the same modular assembly-system is in use for the striker-fired variant. Sure enough, SIG was clever enough to offer the same mix of frames, slides and barrels for the P320 as they did for the P250; in fact, the frames are interchangeable. Owing to geometry in the slide with regard to striker vs. hammer, the X-Change kits themselves are not interchangeable between the P250 and P320, however.

The Caliber X-Change Kit shown changes a compact or sub-compact P250 of any caliber into a full-size pistol. Whether a 6-round, .45 ACP sub-compact or a 13-round, .40 S&W compact model, with this kit it transforms into a 17-round handgun suitable for competition, duty or just higher-capacity daily carry.

MSRP: $399.


Tagua lock line
Tagua lock line

First Look: Tagua LOCK Line Holsters

The advantages of a leather holster with the firm grip of a polymer holster.

Review: Colt 6700 / AR-15A4 Rifle

A throwback that can still run with today's AR-15s.

NIOA Acquires US Manufacturer Barrett Firearms

NIOA will continue to build Barrett's legendary rifles in Tennessee.

Tango With Tension

Take your marksmanship to the next level, one step at a time.

Ballistics 101

The study of ballistics incorporates internal ballistics, external ballistics and terminal ballistics. There are many assumptions associated with each area of study. Some are myths, some are like old wives’ tales and others just come from lack of knowledge.

NRA Challenges Illinois Gun Ban

The National Rifle Association is challenging the recent gun ban passed in Illinois.


Get the best of Shooting Illustrated delivered to your inbox.