Glock G21 Gen 5 MOS .45 ACP 4.61" 10rds, $620 (save $220) Glock G19 Gen 5 MOS 9mm 4.02" 15rds in Blue Titanium, $688 (save $244) ...

The Gen 5 MOS version of the G19 features a removable slide plate for mounting an optical sight, a reversible magazine catch, an ambidextrous slide stop, and the Glock Modular Backstrap System ...

It measures 5.8 inches in length, 4.3 inches in height, and 1 inch wide, weighing roughly about 17.8 ounces. Both have a chambering of 9mm. The barrel length is 4.02 inches in the Glock 19 Gen4 ...

The magazines are of the same style as other Gen 5 Glock magazines, such as the Glock 19 and Glock 45; thus, they will work ...