Hi all - I just wanted to relay my very positive experience further tweaking my Norinco m93 Woodsman clone. While the pistol worked just fine out of the box, I am a tinkerer and cannot resist trying to improve things. 
Over the last year or so, I've done multiple complete disassemblies and polishing sessions of various internal components (pics posted in a dedicated thread in this forum). This work has successfully resulted in a pistol that will comfortably run subsonic ammo, minimized light strikes with formerly problematic brands of ammo, and smoothed up the cycling. Not to mention I can now handle the mags and clean the gun without worrying about cutting myself on one of the many extremely sharp edges that the gun came with...
While polishing the heck out of the firing control group smoothed up the trigger pull from 'gritty' to merely 'bumpy', the trigger on the m93 is not one of its strongest qualities. I thought it could get even better. Close inspection of my pistol showed that the magazine safety does not affect trigger pull AT ALL. So I turned my attention to the firing pin block safety. I had already polished these parts to a mirror shine, but I thought it might be made better still.
So I pulled the firing pin block safety plunger.
AMAZING difference. Frankly, it's a HUGE improvement for my pistol: With the FPBS in, take up and creep were one indistinguishable bumpy mush, and the reset was imperceptible. Take up is now wonderfully smooth, creep is quite short and very smooth (now limited by the hammer/sear engagement), release is crisp and predictable, and reset is clean and positive.
If you'd like to try it on your pistol, it is a simple operation to remove the FPBS: Just pull the slide off using the normal field strip routine, push out the retaining pin for the firing pin block safety plunger, and the plunger and spring underneath it will pop right out (that spring will launch if you're not careful). That's all. I think you can and should leave the FPBS retractor in as part of the hammer assembly - Look closely at it and you'll see why.
WARNING - If you do this modification, you will remove one of the safety features on your pistol. It could theoretically discharge if you drop it on the muzzle with a round in the chamber, even with the thumb safety engaged. For various reasons (one reason being that JMB did not include a FPBS in his design), personally, I am fine with this for my pistol. Use your judgment, of course.
Over the last year or so, I've done multiple complete disassemblies and polishing sessions of various internal components (pics posted in a dedicated thread in this forum). This work has successfully resulted in a pistol that will comfortably run subsonic ammo, minimized light strikes with formerly problematic brands of ammo, and smoothed up the cycling. Not to mention I can now handle the mags and clean the gun without worrying about cutting myself on one of the many extremely sharp edges that the gun came with...
While polishing the heck out of the firing control group smoothed up the trigger pull from 'gritty' to merely 'bumpy', the trigger on the m93 is not one of its strongest qualities. I thought it could get even better. Close inspection of my pistol showed that the magazine safety does not affect trigger pull AT ALL. So I turned my attention to the firing pin block safety. I had already polished these parts to a mirror shine, but I thought it might be made better still.
So I pulled the firing pin block safety plunger.
AMAZING difference.
Frankly, it's a HUGE improvement for my pistol: With the FPBS in, take up and creep were one indistinguishable bumpy mush, and the reset was imperceptible. Take up is now wonderfully smooth, creep is quite short and very smooth (now limited by the hammer/sear engagement), release is crisp and predictable, and reset is clean and positive. If you'd like to try it on your pistol, it is a simple operation to remove the FPBS: Just pull the slide off using the normal field strip routine, push out the retaining pin for the firing pin block safety plunger, and the plunger and spring underneath it will pop right out (that spring will launch if you're not careful). That's all. I think you can and should leave the FPBS retractor in as part of the hammer assembly - Look closely at it and you'll see why.
WARNING - If you do this modification, you will remove one of the safety features on your pistol. It could theoretically discharge if you drop it on the muzzle with a round in the chamber, even with the thumb safety engaged. For various reasons (one reason being that JMB did not include a FPBS in his design), personally, I am fine with this for my pistol. Use your judgment, of course.
