CMC Products introduces the most powerful and reliable .45 ACP Compact 1911 mags. Power Mags are lean and sleek, yet they are extra-heavy-duty with increased reliability and service life. A unique all-steel follower design yields the lowest possible bearing surface for long-lasting function in dirty environments when ongoing cleaning and maintenance may not be possible. The unique follower design also functions as a spring, which allows the Rocket wire spring coils to be the largest (side to side, front to back, and top to bottom) of any extra capacity .45 caliber 1911 mags. For Compact 1911 "Officer's Model" size frames.