The CRBN FP PWR Insert offers a range of bore sizes primarily used by top athletes, featuring a Fluoro Polymer Coated finish for an improvement in performance. The coating process, known as PTFE (Ni/PTFE), creates a hard, scratch-resistant surface with a slicker finish, resulting in a quieter sound, smoother bore, and better shot quality. The FP PWR inserts come in the following control bore sizes: .679, .681, .683, .685, .687, .689, and .691. The CRBN FP Inserts build on the PWR System with those 7 optimized bore sizes and has laser-etched branding and labeling. The FP PWR Kit is also compatible with any barrel that accepts PWR inserts, including the IC PWR Nano Barrel. PWR™ trademark is owned by Planet Eclipse Ltd. FEATURES: Fluoro Polymer Coating Ultra lightweight ~ 0.9 oz 7 bore sizes (.679 .681 .683 .687 .689 .691) Aluminum composition Chamfered breech-end Perfect bore to barrel tip alignment Chamfered breech-end 8.5" control bore Precision Broached to size Laser etched labeling
