I have a Winchester Model 37A in 410, asking $140.00 and a H&R Topper Model 158 in 20 gauge, asking $125. I also have a H&R topper Model 148 with 3 barrels fitted. One is marked Topper Model 88, 12 Gauge, 3" Modified. One is marked Pardner Model SB1, 20 Gauge Modified. This one has been threaded for screw in chokes and has a Colonial Arms, INC Modified choke tube in it. The third barrel is marked Topper JR. Classic, 28 Gauge 2 3/4" Modified. Here you get three gauges in one gun, asking $250.00. The forend on this set fits all 3 barrels perfectly. The Winchester forend wood has a barrel channel wider than the barrel so it apparently came off a bigger gauge gun. It fits tight and works fine. The H&R has a Topper model 88 barrel on it, It works great. I can send pictures if you are interested. Thanks, gunswapper.im wanting to buy a .410 or 20 gauge single shot shotgun . also would like to purchase a cva bobcat muzzelloader . please pm me or text or call 5016504432 .