Originally Posted By okent:
Just got my stamp back on a Colt AR-15 9mm SP1 conversion.
Has the drilled mag well for roll pins but will be shot as a normal M16, no plans to ever use the 9mm mag block again.
I've seen where it is possible to get the large hole converted to a small hole with bushings or even get them welded up and redrilled to spec.
Any recommendations as to which way to go and experiences with such? The last guy I knew who was doing this sort of thing was M60Joe and he's retired. I've seen Gary's Bunker and US Anodizing mentioned in the past.
Also, has anyone done work to allow the use of standard retained front pins?(build up and drill the right side for the retaining pin and spring)
Thanks
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I had this work done on an RR SP1 I had like close to 20yrs ago.
I had John Norrell do it...I later heard Norrell do the aluminum welding for him and that guy passed away.
Before I had it done, I inquired about building the weld up to use a standard front pin and he told me that it wasn't a good idea to subject the receiver to that much heat to do that and told me not to do that.
I heeded his advise and settled just for the small front pin conversion.
I had to use one of these front take down pins. Which is really annoying as I would always misplace them.