I have a sbm4 brace and A5 receiver extension for sale. Only fired like 40 rounds. Excellent condition.
Brace 90 shipped
A5 RE 40 shipped
Both for 120 shipped.
OBO. Paypal only F&F or + fees
Also may trade for:
Geissele 1.93" micro mount +/- $
Fde eotech ( + cash on my end)
Other interesting things (AR related, optics related, glock related)