After running 600 rd's through it of WWB 124 gr NATO ammo with 5 mag's (3 new ones with the Gen 4 and 2 KCI after market mag's) I ran without a single problem.
NO FTF< FTE< STOVE PIPE, etc.etc.
But than I ran 3 box's of 115 gr PMC through the gun and started to have FTF problems
The gun came with an 03 recoil spring. I had the trigger job changed to 3.5# connector, springs and hand polish.
The sights are great and they are like the sight that are on my 1911's, keeping my sight picture the same.
ALL in ALL, this has become my new CARRY (15 rd's + 1 in the chamber) in a Sparks Summer Special II.
I have found out that if you contact Glock, they will send out a new recoil (04) spring system at no charge.
NRA LIFE Member, GSSF MEMBER, Custom Fusion CCO 9mm & 38 SUPER Race Gun, Nighthawk Lady Hawk 9mm Custom & 38Super, Kimber Pro Aegis II Bobtail, Glock G19 Gen 4, G17, G26 G4, G34, Sig P238,RIA 38 Super, Timber Wolf-AA 22LR, GSG-1911-22LR.