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Hi Sean, yes sir, this buffer tube adapter is compatible with the PC Charger. You will also need to obtain a mil-spec carbine receiver extension https://www.budsgunshop.com/product_info.php/products_id/722033282/bcm+carbine+milspec+receiver+extension+buffe , Stay safe & have a great day!

Yes, as Ed says, though just mentioning that for the combined price of the SBA3, the adapter, and a buffer tube you could also get braces like the SB Tactical FS1913 or FS1913A that don't need an adapter and also fold to the side when not in use.