https://www.forgottenweapons.com/heym-sr30-straight-pull-ball-bearing-lock/
Heym SR30: Straight Pull Ball-Bearing Lock? - Forgotten Weapons
Apr 5, 2019 - https://youtu.be/a-44H321Bsg This rifle is lot #2168 at Morphy's April 2019 auction. The Heym SR30 is a modern hunting rifle produced in Thuringia, Germany...
ball bearing lockstraight pullheymforgottenweapons
https://www.farrellbearings.co.nz/shop/Products/Ball+Bearing+Unit+Complete/Complete+Ball+Bearing+Units+-+FAG/UCP205-J7.html
UCP205-J7: 25MM Bearing Unit Grub Screw Lock P205/UC205, P205/56205. X13B - Complete Ball Bearing...
UCP205-J7: 25MM Bearing Unit Grub Screw Lock P205/UC205, P205/56205. X13B