Both tankblocks are compatible with most any 7/8 tubed gun that is threaded to accept Crosman/Benjamin Prod, Fortitude, Discovery, or Maximums fill adapters. I used the larger one on a QB78 with PCP tube from Mountain Air, which was a cut down Disco or Maximus tube...
1 Magnum Airpower tank block, the silver one. $40 shipped lower 48 Paypal F&F or buyer pays fees
1 Magnum Airpower tankblock. with 48ci tank (>780cc!!) and brass tank adapter w/burst disc. Foster fitting added in side of tank block. Perfect for someone using a high flowing valve and needing "all" of the air. Tank is dated '06, no physical damage outside nor inside. $55 shipped lower 48 Paypal F&F or buyer pays fees, OBO.
1 Magnum Airpower tank block, the silver one. $40 shipped lower 48 Paypal F&F or buyer pays fees
1 Magnum Airpower tankblock. with 48ci tank (>780cc!!) and brass tank adapter w/burst disc. Foster fitting added in side of tank block. Perfect for someone using a high flowing valve and needing "all" of the air. Tank is dated '06, no physical damage outside nor inside. $55 shipped lower 48 Paypal F&F or buyer pays fees, OBO.

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