Just to clarify, for those who may not know, the original press check on the GI 1911 was accomplished by hooking the support hand thumb inside the front of the trigger guard and the support hand index finger over the spring cap under the muzzle of the barrel and pressing rearwards to put the slide out of battery to check/confirm that it was loaded. A FLGR precludes that since it protrudes out the front of the slide and can't be compressed when the slide is retracted to the rear. The work around is to grasp the slide with the off hand, either over the top or under and press the slide to the rear, hence the trend of cutting front "c0cking" serrations on the front of the slides on competition oriented 1911s.