larryccf
Contributing member
you guys may not recall, but i imported the non-USA version of the MK23 from 1996-to approx 2002. I say "non-USA version" vs euro version because HK Obendorf ships the same version to the international market outside europe, ie Australia, Pacific Rim etc. The non-USA version has a slightly tighter chamber (about .002") for a little bit better accuracy and comes in the metal alum case with a test target from when function tested. The USA version, due to SAAMI agreement (SAAMI is the sporting arms & ammunitions manufacturers institute) with all firearms & ammo mfgrs, the chambers have to be standardized for wider ammo tolerance. Back up thru approx mid-1970s, you might buy one brand 1911 (or whatever pistol) and it would run great on Federal ammo but horrible on Remington or Winchester. Change pistols and you were on the hunt for the ammo diet it preferred. SAAMI was formed and chamber tolerances were standardized to help eliminate that issue. I assume it's still the case of non-SAAMI or non-USA HKs with the current gen of HK pistols.
Now to the MK23 factoid.-- i had sold one non-USA MK23 to a hard core shooter customer, he had shot his so much he'd worn all the finish off the safety. Anyway, he called up one day, and you could tell his heart was down in his stomach, just his tone of voice told you he was depressed. He was calling because he had damaged his frame. He said he was at the range with the MK23, and when he was finished shooting, as he was packing his stuff up, he noticed a 45 cal round on the ground. He knew it wasn't one of his, but still he picked it up and figured he'd put it down the pipe. He said when he pulled the trigger, the MK23 jumped up over his head, and it had sounded like someone had fired a AR-15 with the muzzle right next to his ear.. It took him a couple of seconds to re-orient himself and said he felt something was pinching the skin on the palm of his right hand. The magazine was on the ground, all apart - floor plate was off, follower was out as well as the mag spring. The pinching on his palm was from the grip - it had split vertically down the rear of the grip, and had apparently pinched some skin when it returned to it's normal position. Also a triangular pc of plastic about 3/4"x3/4"x3/4" had broken ouf of the frame near the safety along the top edge of the frame..
Reason for the call, he was hoping HK Oberndorf could replace the frame with the same serial number. I had him send me the frame so i could photograph it and email them to the engineer i dealt with over at Obendorf. I emailed the images on a Sunday, and called over there on Monday morning. When i got thru to him and he heard my voice, he stated "Yes I see those pictures - that must be over-pressure round!". I asked him what told him that - his response was, "That is where we design it to fail, and to force all the pressure to go down and not hurt the user". Son of a BMT, they had thought ahead, thinking about the idiots out there. I ended melting the front slide rail block out of the frame and sending just that to Obendorf, and they did re-use it.
The above is what clued me in as to why both HK and SIG in europe have never respected the Glock design. Yeah, Gaston had better business acumen, but i could fill a book of safety issues with the Glock design, most of which are frame flex related. Something else a lot of you probably didn't think about when the USP series first came out, i know i didn't, but HK made a big deal in their advertisements in 1994 about their polymer being fiberglass strand re-enforced. Then SIG did the same in their ads in 1996 with the SIG PRO, their first polymer framed pistol.
Fiberglass strand to polymer is like rebar to concrete, it makes it more rigid and stronger, but is also a more expensive polymer to source. When Glock designed the glock pistols, he had a firearms design execute the design, but gaston was the lead engineer which meant he had final say on material selection (as well as design). In the polymer industry, which was gaston glock's background, your profit is defined by how many pennies you can shave off the cost of the 50 gallon drums of material. (Polymer is delivered as small pellet like rabbit pellets, in 50 gallon drums. Gaston had sourced the cheapest polymer he could, that up to maybe 94% of the service demand of the pistol.
When HK and SIG designed their pistols, firearms engineers were the lead engineer, with final say on materials and design, and a polymer engineer was a consultant. Especially the Gen 1 glock, and true through the Gen 3 glock (i cannot speak to the later gen glocks) - take the pistol, cleared of all ammo, leave the mag out and insert your trigger finger up inside the magwell and push out thru one of the grip panels - if you pull your finger down while trying to push out, you'll feel your finger moving thru the polymer grip panel, kind of like a canoe "oil canning" over rocks in white water river. You don't feel that in either any HK or SIG polymer pistols. Glocks have been known to discharge in the holster when an officer jumps in his cruiser and the holster is under his leg, or when an officer chasing a perk, tackles him to the ground and again, lands on his holster. So much for going with the less expensive polymer.
There are other aspects of the difference in the frames where the frame flex compounds the safety issue but this post is going too long - it will have to be for another day
anyway, FWIW
Now to the MK23 factoid.-- i had sold one non-USA MK23 to a hard core shooter customer, he had shot his so much he'd worn all the finish off the safety. Anyway, he called up one day, and you could tell his heart was down in his stomach, just his tone of voice told you he was depressed. He was calling because he had damaged his frame. He said he was at the range with the MK23, and when he was finished shooting, as he was packing his stuff up, he noticed a 45 cal round on the ground. He knew it wasn't one of his, but still he picked it up and figured he'd put it down the pipe. He said when he pulled the trigger, the MK23 jumped up over his head, and it had sounded like someone had fired a AR-15 with the muzzle right next to his ear.. It took him a couple of seconds to re-orient himself and said he felt something was pinching the skin on the palm of his right hand. The magazine was on the ground, all apart - floor plate was off, follower was out as well as the mag spring. The pinching on his palm was from the grip - it had split vertically down the rear of the grip, and had apparently pinched some skin when it returned to it's normal position. Also a triangular pc of plastic about 3/4"x3/4"x3/4" had broken ouf of the frame near the safety along the top edge of the frame..
Reason for the call, he was hoping HK Oberndorf could replace the frame with the same serial number. I had him send me the frame so i could photograph it and email them to the engineer i dealt with over at Obendorf. I emailed the images on a Sunday, and called over there on Monday morning. When i got thru to him and he heard my voice, he stated "Yes I see those pictures - that must be over-pressure round!". I asked him what told him that - his response was, "That is where we design it to fail, and to force all the pressure to go down and not hurt the user". Son of a BMT, they had thought ahead, thinking about the idiots out there. I ended melting the front slide rail block out of the frame and sending just that to Obendorf, and they did re-use it.
The above is what clued me in as to why both HK and SIG in europe have never respected the Glock design. Yeah, Gaston had better business acumen, but i could fill a book of safety issues with the Glock design, most of which are frame flex related. Something else a lot of you probably didn't think about when the USP series first came out, i know i didn't, but HK made a big deal in their advertisements in 1994 about their polymer being fiberglass strand re-enforced. Then SIG did the same in their ads in 1996 with the SIG PRO, their first polymer framed pistol.
Fiberglass strand to polymer is like rebar to concrete, it makes it more rigid and stronger, but is also a more expensive polymer to source. When Glock designed the glock pistols, he had a firearms design execute the design, but gaston was the lead engineer which meant he had final say on material selection (as well as design). In the polymer industry, which was gaston glock's background, your profit is defined by how many pennies you can shave off the cost of the 50 gallon drums of material. (Polymer is delivered as small pellet like rabbit pellets, in 50 gallon drums. Gaston had sourced the cheapest polymer he could, that up to maybe 94% of the service demand of the pistol.
When HK and SIG designed their pistols, firearms engineers were the lead engineer, with final say on materials and design, and a polymer engineer was a consultant. Especially the Gen 1 glock, and true through the Gen 3 glock (i cannot speak to the later gen glocks) - take the pistol, cleared of all ammo, leave the mag out and insert your trigger finger up inside the magwell and push out thru one of the grip panels - if you pull your finger down while trying to push out, you'll feel your finger moving thru the polymer grip panel, kind of like a canoe "oil canning" over rocks in white water river. You don't feel that in either any HK or SIG polymer pistols. Glocks have been known to discharge in the holster when an officer jumps in his cruiser and the holster is under his leg, or when an officer chasing a perk, tackles him to the ground and again, lands on his holster. So much for going with the less expensive polymer.
There are other aspects of the difference in the frames where the frame flex compounds the safety issue but this post is going too long - it will have to be for another day
anyway, FWIW
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