Hi, I have not seen any info about the Bremmer .22lr rifles made in Birmingham, England at the old Parker Hale plant. I have attached pictures of my SAR15 Carbine. It uses the US M261 22lr bolt (minus barrel extension) and 10 round magazine inserts. It has a dedicated 22lr barrel and a blanked off buffer tube. All other parts appear to be AR15A2. Hope this is of interest to some of you.
Regards,
John.