Freebase(0.00 / 0 votes)Rate this definition: Imagism was a movement in early 20th-century Anglo-American poetry that favored precision of imagery and clear, sharp language. It has been described as the most influential movement in English poetry since the activity of the Pre-Raphaelites.
The Spring Trigger. A spring trigger is actually a small spring with a threaded end that replaces the hard trigger on specially made index-triggered releases. Because it bends when you pull it, the spring is very difficult to punch. Your only recourse is to keep pulling as you continue to aim at the spot you want to hit.
Shield Spring Kit: Trigger Return Spring, Shield Slave Pin and Sear spring. Trigger Pull in the mid 5lb range. Fits: All Smith & Wesson M&P Shield Pistols in 9mm and .40 calibers. Works in conjunction with the Apex Shield Action Enhancement Trigger, or as a stand-alone with the factory trigger. If you are interested in a replacement trigger for the M&P Shield, please see the Shield Duty/Carry Action Enhancement Trigger and Kit.