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What is the J Lock on Rem Bolts?

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  #1  
Unread 02-14-2010, 04:48 PM
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Location: Black River Falls, WI
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What is the J Lock on Rem Bolts?

I recently aquired a 7mm RUM that has the J Lock bolt. What exactly does this do? Will I gain anything by swapping it out? This gun will be used for a .300 RUM project, so any suggestions would be appreciated.
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Unread 02-14-2010, 09:41 PM
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Re: What is the J Lock on Rem Bolts?

Quote:
Originally Posted by jasonprox700 View Post
I recently aquired a 7mm RUM that has the J Lock bolt. What exactly does this do? Will I gain anything by swapping it out? This gun will be used for a .300 RUM project, so any suggestions would be appreciated.
It's a lock that physically locks the firing pin. It's just another thing to go wrong at the worst moment.

For about $50 you can replace it with an aftermarket assembly from Callahan, PTG, or others.

IMO, you'll get better and more consistent primer strikes and shorter lock time if you replace the J-lock.
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Unread 02-14-2010, 09:48 PM
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Re: What is the J Lock on Rem Bolts?

Here is the one I got to replace my J-Lock. I was amazed at what a twisted mess the spring was on the J-Lock.


GRE-TAN : Firing Pin Assembly, Silver, LA (309-000-002) - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools
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