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Old March 1, 2009, 12:17 AM   #10
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Join Date: August 9, 2007
Location: Oregoncoast
Posts: 1,663
No, the problem was a negative surface on the "bolt block assembly" where it contacts the bolt. Ruger calls it the bolt block assembly, to differentiate the part from another part from way back called a bolt block that is in the hammer strut area and is not relevant to the discussion. It's one solid stamping, so "assembly" is weird to me. Anyway, by grinding back to the original angle the problem went away.

Knowing about metals I may substitute (If I can) a blue part for the stainless one in the future. It's difficult to heat treat any stainless steels to equal the properties of carbon or alloy steels I'm thinking. Also, this part is inside the receiver so it won't be seen.
CNC produced 416 stainless triggers to replace the plastic triggers on Colt Mustangs, Mustang Plus II's, MK IV Government .380's and Sig P238's and P938's. Plus Colt Mustang hardened 416 guide rods, and Llama .32 and .380 recoil spring buttons, checkered nicely and blued.
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