I have a colt 6450, actually it was my Dad’s but I have it now. About 10 years ago we replaced the A1 upper with a RRA flat top upper and I’m thinking about switching it back to the A1 upper….retro is cool right now anyways right? Should I switch it back or leave it alone? The other option is to add something like a centurion arms rail to it and keep the flat top.
Not being fully versed in the 9mm guns, this one has a ramped bolt but I’m not sure on the pin size yet (.170 vs .154). It’s begging to get SBR’ed….ugh.
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