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John Sabato · 06-23-2014, 10:44 AM

Any sight assembly mounted on a breechblock wouldn't last very long. The G-sheer forces involved would snap the mount screws in short order.

What I am submit as my guess is that this modification is some armchair engineer/gunsmith's idea to bore gas relief holes in the event of a primer being pierced... the holes would vent gases flowing into the firing pin channel, instead of blowing the firing pin out the rear of the breechblock.

I don't see the holes as a major threat to structural integrity... but is certainly not as strong as Georg Luger designed it...

A real shame to do such a thing to a Navy Luger.

06-23-2014, 10:44 AM	#22
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,150 Thanks: 3,003 Thanked 2,304 Times in 1,096 Posts	Any sight assembly mounted on a breechblock wouldn't last very long. The G-sheer forces involved would snap the mount screws in short order. What I am submit as my guess is that this modification is some armchair engineer/gunsmith's idea to bore gas relief holes in the event of a primer being pierced... the holes would vent gases flowing into the firing pin channel, instead of blowing the firing pin out the rear of the breechblock. I don't see the holes as a major threat to structural integrity... but is certainly not as strong as Georg Luger designed it... A real shame to do such a thing to a Navy Luger. __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*