This breech plug closely resembles the Metrics Unlimited plugs no longer made. It effectively converts the NEF/H&R Huntsman and Sidekick muzzleloading rifles from the plastic primer carriers to a direct fit 209 plug that BH209 can be used in. This is made of stainless steel and will require use of a tiny rubber o-ring inside the primer channel. I will include 2 of the o-rings with this brand new plug for $58 shipped anywhere a SFRB will go.
