Vltor MUR1A Modular Upper Receiver 223 Rem/5.56 NATO With Forward Assist Black 000000099522

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Vltor MUR1A Modular Upper Receiver 223 Rem/5.56 NATO With Forward Assist Black 000000099522

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MUR1A: UPC
000000099522

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I can get it to run in a cz. Not in any striker fired pistol with their more radical cam. As you go to lower spring weight in striker fired other problems are introduced. I've tried. I've got 5 k of it.

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PSA micro is more or less same. Bought lighter springs for it too trying to get it to run.

Same guns run like sewing machines with Speer lawman or S&B.
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I haven't chronoed it don't really care. Does not run in my primarie

Gonna take it gun show and dump it.

Care to share the firearms it runs in for you?

https://www.glock.pro/threads/remington-umc-9mm-luger-mega-pack-good-or-bad.1425/...

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Code doesn't work

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Vltor MUR1A Modular Upper Receiver 223 Rem/5.56 NATO With Forward Assist Black 000000099522

Vltor MUR1A Modular Upper Receiver 223 Rem/5.56 NATO With Forward Assist Black 000000099522

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