Just an update.
Got my stamp for my SBR Thursday and starting talking with all the companies mentioned above.
AJI Machining in Hialeah phone # is no longer in service, not sure if they're still in business or not.
Palm Beach Tactical wanted me to drop off my lower to them for 2 weeks so they can then send it out locally to get engraved. Wasn't going to wait that long without my new Sig MPX SBR.
Ruby's Jewelry in West Palm Beach was awesome! They are open Monday-Saturday from 10AM-7PM. Bring in the lower and Robert will engrave it for you while you wait. Took less then 10 minutes and came out perfect. For $45 bucks it was well worth it. Anybody in South Florida looking to get something engraved go see Robert at Ruby's Jewelry.
Ruby's Jewelry
1941 S Military Trl
West Palm Beach, FL 33415
Phone number (561) 965-5856
Pic of new Sig MPX 8" SBR. Aero sights, Scalarworks co-witness riser, Trijicon MRO, RailScales, Radian Raptor charging handle and riser, Viking Tactics vertical grip, Streamlight TLR8 laser/light, Taccom buffer spring, SLT-1 trigger, Magpul MOE K2 grip, Blue Force Vickers Sling.