Use of this magazine on a Nerf Stryve who worked 6 round magazine RELIABLE at the beginning only with the original Hasbro. With all other (12er, 18er, 25er and 35er) Clips the part bitchy totally around. Instead SpielSpass only frustration! As rescue then appeared the 15er Blaster Parts Magazine. Meanwhile Start began but Holprig.Der last shot Lies never verschiesen !!! The reason was that, at the end (last bullet), very weak spring tension! Pur frustration, disappointment! Remained only, the modding Stryve (video on YouTube). .... And lo and behold ..... They are killer !!!! Trouble-free !!!! ..... 15Schuss in 2 !!!! Sec! Awesome! Pay only buy these magazines! But, as I said, the nerve MUST be modded !!!!!