Contacted muzzlemack and he has stopped making these about two weeks ago. I am planning to source a 2300T .177 barrel, have it cut to 8.5" and turned to fit. I also have the instructions to reduce the power should it bring it too close to 6ftlb.
Good Deals with: Gazza, Fred, muts65, Brian747, wombat100, Tweaky (BSAOG), the wizard, delboy, craigy, skygrowler, JTH71, pgm112, Doger21, shootingmad, PHOBUS, bhill22, pmcb, pablo19, BobSki, Petay, Double Tap, Geoff555, Wild dogman, Multijet, BANANAMAN, RapidNick