be fastened to handle portion 20 again by tightening screws 23 the assembled gun will appear as shown in fig2 with thumb pad 26 extending outwardly from grip 21 while the remainder of lever 25 bushing 32 and lever support plate 29 is covered by grip 21 with one exception the upper extension 31 of lever support plate 29 extends upwards from the top of grip 21 to near the top of barrel slide 24 of the gun in this position the shooter 39 s thumb 41 can rest against extension 31 and against thumb pad 26 without fear of touching slide 24 which moves rearwardly and forwardly in a reciprocating motion each time the gun is fired it is to be noted that thumb 41 is in the identical or almost the identical position in fig2 as it would be when firing the unmodified gun when the shooter wishes to release the magazine 22 to replace an empty magazine with a full magazine thumb 41 is pressed downwardly in the direction of arrow 42 causing lever 25 to pivot around screw 33 releasing magazine 22 by moving the catch mechanism not shown laterally perpendicular to the plane of the page of drawing magazine 22 will then fall out in the direction of arrow 48 leaving room to insert a new magazine the magazine catch mechanism.