Colt ar15 22 conversion kit

[Nasc50]

Hello fellow calgunners. I have a original colt ar15 22 conversion kit and I'm trying to find out if anyone out there knows of a magazine that will work with the colt unit. It would be nice to have more then one magazine for it. I bought this unit from B&E at the LA county fairgrounds back in the good old days.
Thanks for the help. Maybe this thread belongs in the curio & relic section.

[Jimi Jah]

Is it the original Cenier design? If so, Black Dog mags work well.

[brassburnz]

If it is the Air Force M261 conversion, Black Dog has these mags for it.

http://blackdogmachinellc.net/M261/OLYMPIC-ARMS.aspx

The original kits have an insert you place in a 20-round mag. I have one around here someplace but use the Black Dog mags instead of the inserts.

[Nasc50]

If it is the Air Force M261 conversion, Black Dog has these mags for it.

http://blackdogmachinellc.net/M261/OLYMPIC-ARMS.aspx

The original kits have an insert you place in a 20-round mag. I have one around here someplace but use the Black Dog mags instead of the inserts.

Thanks for the response. But unfortunately this is a later unit colt sold commercially. I do believe they tried to sell this unit to the military, but were unsuccessful. Tried this unit out in my bushmaster 20 " hbar upper, function almost perfectly using federal bulk 36 grain copper hp. Accuracy was pretty good at 100 yards small metal targets using iron sights. Switch over to a original colt 3x scope that was zeroed for 223. Shot a little to the right at 100 yrs. BDC set at 400 yrs. I did notice sometimes I could only load 9 rounds into magazine instead of 10. Otherwise I am pleased with its performance.