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Increases power and provides improved shot stability for consistent, extended shot strings.
For AT44 series rifles, please be sure to verify whether or not the air cylinder's valve spring cover is threaded. The original AT44 series rifles used a white plastic plug, and require CR-H1-HA90420. Current production AT44 series and BullBoss rifles use a threaded spring cover and require CR-H1-HA90435. If you need assistance determining which item number fits your application, please contact us.