Close-up picture of "Made in Japan"

alvin · 03-05-2010, 10:16 AM

The operation concept is same as that of Mauser: short recoil + wedge lock under the bolt. But the implementation detail is different.

Not sure why Mauser was so sick on visible pins. Their solution was lock frame. Pins are actually unavoidable on guns, but WM tried to integrate things together and we refer those as "pivot", which performs pin's function but appears in another form, most hiding inside. Spanish obviously did not give a s*** to that. So they simply put pins on surface. Ugly? not as decent? practical? pretty? It's a taste, good or bad. Personally, I feel gun without surface pin is neater.

Lock frame design was not very popular on pistols. But modern gun like SIG 250 is applying this concept. That makes lots of sense on pistols with plastic frame -- pins are installed on a steel lock frame, so they can be easily removed and re-installed, and the outside plastic frame only plays a lock-frame-holder function. This concept was from Mauser more than 100 years ago.

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03-05-2010, 10:16 AM	#4
alvin User Join Date: Jul 2007 Location: US Posts: 3,843 Thanks: 132 Thanked 729 Times in 438 Posts	The operation concept is same as that of Mauser: short recoil + wedge lock under the bolt. But the implementation detail is different. Not sure why Mauser was so sick on visible pins. Their solution was lock frame. Pins are actually unavoidable on guns, but WM tried to integrate things together and we refer those as "pivot", which performs pin's function but appears in another form, most hiding inside. Spanish obviously did not give a s*** to that. So they simply put pins on surface. Ugly? not as decent? practical? pretty? It's a taste, good or bad. Personally, I feel gun without surface pin is neater. Lock frame design was not very popular on pistols. But modern gun like SIG 250 is applying this concept. That makes lots of sense on pistols with plastic frame -- pins are installed on a steel lock frame, so they can be easily removed and re-installed, and the outside plastic frame only plays a lock-frame-holder function. This concept was from Mauser more than 100 years ago.