Hi Armando, the Ruger AR-556 is banned as an assault weapon in the state of MD, per the Maryland State Police.
You can search here to see what is banned and what is legal >>> https://mdsp.maryland.gov/Organization/Pages/CriminalInvestigationBureau/LicensingDivision/Firearms/FirearmSearch.aspx?Paged=TRUE&p_GroupCol1=Knights%20Armament&PageFirstRow=101&&View={5E568F20-A495-4E49-A0E0-C53F530B98F7}
Stay safe & have a great day!

Hi Armando and welcome. Unfortunately, no Sir, due to the non "Heavy Barrel" - HBAR. Some MD legal HBAR models here; -- budsgunshop.com/product_info.php/products_id/752002203/ati+alpha+maxx+5.56+rifle+16+hbar+bbl+13+handguard+sniper+grey+flip+up+1-30rd+mag --------------------------------------------------------------- budsgunshop.com/product_info.php/products_id/729000931/dblstr+16+grey+hbar+chf+rifle ------------------------------------------------------------- budsgunshop.com/product_info.php/products_id/148347/glfa+223+wylde+tungstenss ----------------- Cheers and stay safe!

Good afternoon to you!! Unfortunately the Ruger AR5.56 is not legal in Maryland. Please see below link for more information.
https://mdsp.maryland.gov/Organization/Pages/CriminalInvestigationBureau/LicensingDivision/Firearms/FirearmSearch.aspx?Paged=TRUE&p_GroupCol1=Knights%20Armament&PageFirstRow=101&&View={5E568F20-A495-4E49-A0E0-C53F530B98F7
You can also see the other link I've attached.
Hope this helps. Have a good rest of your day.
🇺🇸🇺🇸 'Merica' 🇺🇸 🇺🇸
budsgunshop.com/feeds/state_reg/maryland_restrictions.pdf />

The standard Ruger AR-556 with a 30+1 capacity is generally not legal in Maryland as-is due to Maryland's "assault weapon" ban, requiring specific compliance features like a heavy barrel (HBAR), fixed stock, and 10-round magazine, though Ruger offered compliant models (Model 8511) with these features, making compliance possible by purchasing the correct version or modifying a standard one with compliant parts.

It is illegal to own in Maryland.