Peeo apeture of RB Navy arms

[Shooter6br]

Bought a Navy arms sporting Model (Traditional) with globe frount sight and Tang rear. The peep apeture is very small Besides drilling it out camn I get a replacement after market Any good sources?

[JSnover]

try riflesmith.com or dixiegun.com
Montana Vintage Arms, and Buffalo Arms, too.
Can't remember which was which but I've seen instructions on opening the aperture and aftermarket replacements with bigger holes. One or more of them even markets an aperture disc with multiple holes, you can select whichever one you like.
Good luck.