I've been using these one piece (no separate clamp plate) Universal mounts from UTG this year along with cheap Weaver Quad Lock rings from WallyMart. The adapter clamps on the receiver dovetails similar to the expensive (relatively) BKL one piece mounts, however the UTG adapter also includes recoil stop pins. Before using the UTG adapter I've had issues with the BKL one piece mount slipping, even with the base screws were torqued to 40 in/lbs (5 in/lbs over the BKL max recommended torque).
The adapter cost about $15 and the Weaver Quad Locks bought from WallyMart cost about $10 so the combination only set me back about $25 total. The setup is "rock solid" on both my HW95 and R9. The adapter plus
High Weaver Quad Lock rings place my scopes with 50mm objectives at just about the perfect height above the R9 and HW95 receivers. I wish Weaver offered the Quad Lock rings for a 30mm scope tube, however they're only available for 1" tubes.
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As a side note, the yellow tape in front of the Weaver Quad lock ring was placed to see if the scope would shift using only 10 in/lbs of top strap screw torque and the scope didn't shift after a bunch of shots but I still added two more in/lbs of torque anyway. 12 in/lbs of torque is still less than the 15 in/lbs of torque used with the "BKL one piece" mount that allowed the scope to shift unless I lined the BKL rings with cloth electrical friction tape.
https://www.airgundepot.com/utg-universal-dovetail-to--picatinnyweaver-adapter.html https://imgur.com/FystEz2
https://imgur.com/d1qT29A
https://imgur.com/btWecqf
https://imgur.com/JYKOfNy