Nine Ball Wide Use Bucking Proven performance, excellent range, and superior accuracy, use a Nine Ball soft bucking in a wide variety of builds for an instant performance boost. Built on the same technology and techniques developed behind the Prometheus line of buckings, the Nine Ball wide use series of buckings for GBBs and BASRs expands further.The superb quality and tolerances of the bucking provides increased range, accuracy, and precision while creating the perfect air seal with excellent resistance to oil and wear.  Compatibility Tokyo Marui SpecificationGas Blowback HandgunsBolt Action Sniper Rifles - Hi-CAPA 5.1 - Hi-CAPA4.3 - M1911A1 - MEU - P226 - P226 E2 - GLOCK 17 - GLOCK 18 - GLOCK 19 - GLOCK 26 - GLOCK 26ADVANCE - SOCOM Mk23 - HK45 - HK45 Tactical - VSR-10 - VSR-10GSPEC - GBB MP7A1 - GBB M4A1 MWS - GBB Type 89 - M40A5 - USP - M45A1 - M&P 9 - M&P 9L PC Ported - M&P 9 V Custom