I OWN A OLY ARMS 9mm RIFLE. WHEN SHOOTING IT AT TIMES I GET A LIGHT REPORT WHEN IT IS FIRED, ALSO A SHORT CYCLE ON THE BOLT, AND SOME TIMES I HAVE SEEN THE BULLET HEAD TRY TO COME OUT, THIS HAPPENS WITH MOST FACTORY AMMO, I DO RELOAD FOR IT , AND IT HAPPENS WITH MY AMMO AS WELL. SO NOW I TAPER CRIPM MY AMMO, IT HELPS SOME, I CALLED OLY THEY SENT ME A MUCH MORE HEAVY BUFFER TO MAKE IT MORE HEAVY, THAT MADE IT WORSE, THE BOLT SLAMED FOWARD WITH MUCH MORE FORCE. THE BULLET PULL OUT BECAME BAD, SO I TOOK IT BACK OUT. THE BOLT OPERATION IS VERY SMOOTH AND MOVES VERY FAST.   HAS ANY ONE SEEN THIS BEFORE?? MY FRIEND SOLD HIS DO TO THIS, HE BOUGHT A STORM 9mm.. I LIKE THE WAY THE OLY TYPE 9mm HANDLES, MY STEN GUN MOD WORKS GREAT, I USE THE BLOCK BUT MADE A MOD TO THE BACK OF THE MAG TO GET RID OF THE SCREW IDEA AND HAVE NO PROBLEMS WITH THE MAGS AT ALL I BOUGHT ALL 25+ MAGS FOR AROUND 5.00 EACH   THANKS   MUCH     MIKE B.