Ruger AR-556 .300 Blue/Black Semi-Automatic Rifle

A: Kenneth, yes. It utilizes a pistol-length gas system to reliably function with both the lightest supersonic hunting rounds and heavy, subsonic rounds. Have a great day!

A: Yes, this will run subsonic ammo just fine. Hope this helps.

A: Kenneth, it will work with the vast majority of 190gr to 220gr subsonic loads. Cheers and stay safe!

A: Gary, no Sir it is not MD compliant (Needs a Heavy Profile Barrel). Some good MD details here : http://www.blackanchorarmory.com/md-compliant-ars.html

A: Unfortunately no, this is not Maryland compliant. AR rifle must possess a heavy-barrel contour to be Maryland compliant. This rifle does not have a heavy-barrel contour. ( budsgunshop.com/feeds/state_reg/maryland_restrictions.pdf ) I hope this helps!

A: Gary, yes should be MD complaint, it is equipped with a heavy-contour, cold hammer-forged 4140 chrome-moly steel barrel. >>> ruger.com/products/ar556/specSheets/8530.html ... I would double check with your FFL, as the MD gun roster does not say one way or the other about this model, but other models on the roster with heavy barrels are compliant. >>> https://mdsp.maryland.gov/Organization/Pages/CriminalInvestigationBureau/LicensingDivision/Firearms/FirearmSearch.aspx?Paged=TRUE&p_GroupCol1=Mossberg&PageFirstRow=101&&View={5E568F20-A495-4E49-A0E0-C53F530B98F7} .....Have a great day!

A: Hi Sangameswara and welcome. The barrel is threaded 5/8x24 and the muzzle brake is removable. A Suppressor can be added such as https://www.budsgunshop.com/product_info.php/products_id/3123/gemtech+one+.762+titanium+5+8x24 - Cheers and stay safe!

A: Sangameswara, according to the Ruger web site, the barrel is threaded 5/8x24, so the muzzle device should be removable. Stay safe & have a great day!