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Picture of How to Field Strip a Sig Sauer P250 Modular handgun
The Sig Sauer P250 is a modular hand gun platform that can be chambered in  9mm, .357Sig, .40S&W, and.45ACP.  The grips, slide assemblies, barrels  and magazines are interchangeable with the the serialized firing group.(step  4) All calibers are also avail. in full compact or subcompact (excluding .45acp). In this instructable I will show you how to field strip this weapon.

Step 1: Safety First

Picture of Safety First
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First  find a safe work environment, free of distractions and grabby hands. Next if the gun is loaded unload it, if not check to be sure its unloaded. Ok, now this step is really important ....make sure the gun isn't loaded. To do this pull back the slide and lock it it place, now remove the magazine,finally visually inspect the chamber to be sure no rounds are present. Now that you are sure the weapon is unloaded we can move on to step two.