Basically when i bought an SGC Speedmaster it came with this lower receiver rather than the 'standard' American one. Later down the road i bought a .22lr drop in conversion and at the time the only magazines available were SGC's own (which i didn't like as they were 10/22 'banana' type and very expensive), and the Ceiner ones which didn't fit in this SGC lower receiver.
I therefore got a standard american one made by Mark Bradley using all of the internals from this lower to use ceiner mags, and that was the lower which was with the rifle when i sold it. This was about a month before the Black Dog mags came out, which looked and functioned much better than both the ceiner and SGC ones :roll: After that i no longer had a 'good reason' to own the lower and its been sitting in my local RFD ever since. Just been in there today to buy some ammo and asked about it and it was bagged in a corner of the ammo/rifle room razz
Any other questions feel free to ask
