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Discussion Starter · #1 · (Edited)
I'm updating my cast receiver SW5 to a HK34 configuration because the front sight is too close for my aging eyes to achieve good focus when I'm wearing glasses for nearsightedness, and I otherwise want a less cheesy cocking tube on it.

It came with the factory unthreaded barrel sans chamber flutes of unknown quality but low mileage. Bolt gap should increase from .15-.20mm to 35mm-.40mm when I move from the included -2 to +2 rollers.

There's no real muzzle flash or recoil to tame with a muzzle device although I wouldn't mind something there to protect the crown.

Is there a good reason to install a RCM HK 34 barrel instead of putting a bushing on my existing barrel at the appropriate front sight location?
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