Just Right carbines take Glock magazines but now take M&P 9mm/40S&W magazines with magwell replacement ($75 with free shipping) - http://shop.justrightcarbines.com/MP-Magwell-Assembly-Complete-A0030MPASSY.htm
I found a JR Carbine in 45ACP (Glock mag model) and will be ordering the conversion kits after the move.bds said:Not yet. I am planning to buy one with caliber conversion kits for 9mm/40S&W/45ACP after the move.Potatohead said:I guess you have a Just Right carbine, B?
They are around $800 for the complete carbine