Ran another 600 rounds through mine since the review, including running it in a large 3 gun match. Ran it with Cross mags.
The AR retaining pin worked great.
The gas block screws walked, so I'm going to use some high temp permatex loctite stuff to seal those in.
I have stripped mine and made videos for my site.
Here are things that will be interchangeable:
Barrel note: must be carbine gas length regardless of barrel length
Barrel nut
Handguard note:some will not work do to gas block clearance
Pistol grip note:there is no safety detent spring
Buffer tube
Castle nut
Locking ring
Buttstock
Fire control group note:some cartridge types will not because of bolt open lever clearance
Magazine catch and button
Parts that are not interchangeable:
Bolts
Bolt carrier group
Recoil springs
Bolt catch
Safety
Hammer pin
Trigger pin
Here is the bolt catch and longer hammer pin
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Here is the safety spring and safety assembly which is tied into the bolt catch assembly. The safety has a square end and grove for the spring. Totally different from an AR15
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Wondering why the gas system has to be Carbine length only ?
Who has these rifles in stock?
The MCR is not designed to be ambidextrous like the 180 is.
Just received my MCR the other day and it looks far different from most of the WS-MCR's I've seen in that I cannot move the charging handle to the right side. The right side has the ejection port, but is solid metal behind it. Is this a change in design recently?
The hunting guy has a ws-mcr review and it sure shows it being ambidextrous.
Here is his vid starting at 1:15 where the right side is clearly "open" and he mentions the charging handle can be moved from side to side.
https://youtu.be/C1BRJYePx-s?t=75
That must be an earlier model. This particular bolt has the option but the upper does not.
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