<P> Glock has updated its basic design several times throughout its production history . A mid-life upgrade to the Glock pistols involved the addition of checkering on the front strap and serrations to the back strap . These versions , introduced in 1988 , were informally referred to as `` second - generation '' models . To meet American ATF regulations , a steel plate with a stamped serial number was embedded into the receiver in front of the trigger guard . In 1991 , an integrated recoil spring assembly replaced the original two - piece recoil spring and tube design . The magazine was slightly modified , changing the floorplate and fitting the follower spring with a resistance insert at its base . </P>
<P> Glock has updated its basic design several times throughout its production history . A mid-life upgrade to the Glock pistols involved the addition of checkering on the front strap and serrations to the back strap . These versions , introduced in 1988 , were informally referred to as `` second - generation '' models . To meet American ATF regulations , a steel plate with a stamped serial number was embedded into the receiver in front of the trigger guard . In 1991 , an integrated recoil spring assembly replaced the original two - piece recoil spring and tube design . The magazine was slightly modified , changing the floorplate and fitting the follower spring with a resistance insert at its base . </P>
when did the glock gen 2 come out
when did the glock gen 2 come out
1988
1988