The Brownells 1911 sear fixture is an essential tool for any pistol-smith. This handheld device securely holds the sear and positions it to enable precise stoning of the contact surfaces at the correct angles. This process ensures the creation of a precise, smooth and clean-breaking trigger, free from unwanted creep. Adjusting the fixture's setscrew allows for modification of the sear angle. Brownells recommends purchasing the medium India stone (part number - 657246146), ceramic stone (part number - 080721002) and the 1911 hammer squaring file (part number - 080752000) to complement this product.