I just bought a Colt 1991A1 a couple of weeks ago. I'm looking to pick up some new mags for it and am leaning towards Checkmate 7 rd, hybrid feed lips with flat/dimpled follower. I've heard that Checkmate makes "oem" mags for colt and that this is basically what new factory colt magazines are. www.midwayusa.com has new Colt magazines on sale right now. Does anyone know if the mags that are on sale have the hybrid feed lips? I e-mailed them and they couldn't tell me anything more than they were replacement Colt magazines. I'd also like to replace the plastic trigger with either steel or aluminum, but I really like the length of the current 1991A1 trigger. Does anyone know if Colt has a similar trigger in steel or aluminum. I checked www.brownells.com and they have a Colt replacement trigger, but it doesn't give much information. Thanks for any help.