Lapco Cocker Breach Sizer .683 NiMH Batteries weaver / 20mm standard rifle

weaver / 20mm standard rifle rails Built-in integrated sunshade

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They fit inside most buffer tubes and crane stocks

Sold out from the manufacturer

Lapco Cocker Breach Sizer .683 NiMH Batteries weaver / 20mm standard rifleA breech sizer is a barrel adapter created in the hey day of closed bolt markers and is made even better today because of the LAPCO commitment to constant product improvement. By installing this adapter between the Cocker threaded barrel and the Cocker threaded marker, you will prevent balls from rolling out of the barrel without losing any accuracy. This is an especially effective accessory to prevent paint roll out from pump and other closed bolt