Reload this thread a few times and watch the add from Brownell's up top that says "customize your 1911." It pops up about every 4th or 5th time I refresh the page. Hope this helps. Also, while most folks have them in .45ACP, I own and shoot a great little Colt lightweight commander in .38 Super Auto that's also a "1911".
Although personally I am quite content with existing explosives, I feel we must not stand in the path of improvement.