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Barrel nut Marui Mk4 (MARUI-M4-061)
Adjusted nub pocket to align the nub center on the bucking patch
Features gear cycle detection
Increased FPS can be achieved
Steel stock replacement for the Tokyo Marui MP7 GBB
0.25g 4000x Tracer Bio Perfect BB SP-BLS-20 Barrel nut Marui Mk4 (MARUI-M4-061)Specifications: TRACER BIO BBS 6mm Material: PLA and noctilucant powders 4000 BBs per bag Biodegradable material Polylactic Acid (PLA) is a granulate of natural character composed mainly from corn. With this composition, BBs quicker disintegrate due to temperature and UV radiation. BLS focuses on the best stable quality and environmental friendly proces. We have all the certificates for ISO 9001 quality management system and ISO 14001 environmental
