The question came up about Massachusetts approved guns. This is the most current list I could find:
Search HERE for current lists.
Massachusetts licensed dealers are limited as to what guns which they can sell to you. The dealer can only sell you handguns that comply with two standards - the law (see Chapter 140, section 123 of the Massachusetts General Law), and the regulations of the Attorney General (940 CMR 16.00).
Commonwealth of Massachusetts
Executive Office of Public Safety
APPROVED FIREARMS ROSTER 04-2007
This roster has been compiled in accordance with M.G.L. c.140; §131¾ and 501 CMR 7.00. It contains weapons determined by Massachusetts approved independent testing laboratories to have satisfactorily completed the testing requirements of M.G.L. c. 140; §123; clauses 18th; 19th; 20th; and 21st. The reports resulting from said tests were reviewed by the Gun Control Advisory Board and those makes and models listed herein were subsequently approved by the Executive Office of Public Safety as having complied with the statutory handgun testing provisions of M.G.L. c. 140; §123.
Additions to this roster are likely to occur periodically; and dealers and law enforcement personnel should always utilize the most recent roster for purposes of determining statutory compliance. To find the most recent Approved Firearms Roster, go to the Criminal History Systems Board web site at http://www.mass.gov/chsb and click on Firearms Support Services.
Pursuant to the requirements of 501 CMR 7.03; firearms dealers should note the following warning:
TRANSFERS OF HANDGUNS ARE ALSO SUBJECT TO THE ATTORNEY GENERAL’S HANDGUN SALES REGULATIONS; 940 C.M.R. 16.00 ET SEQ. FIREARMS ON THIS ROSTER DO NOT NECESSARILY COMPLY WITH THE REQUIREMENTS OF THE ATTORNEY GENERAL’S HANDGUN SALES REGULATIONS. INFORMATION ABOUT THOSE REGULATIONS CAN BE OBTAINED FROM THE OFFICE OF THE ATTORNEY GENERAL AND CAN BE ACCESSED ON THE ATTORNEY GENERAL’S WEBSITE; WWW.AGO.STATE.MA.US.
The Attorney General is providing all licensed gun dealers in Massachusetts with specific information on how this Approved Firearms Roster relates to the Attorney General’s Handgun Sales Regulations (Enforcement Notice). Enforcement Notice; as well as other information regarding the Attorney General’s Handgun Sales Regulations; can be obtained at the Attorney General’s web site – http://www.ago.state.ma.us − and from the Office of the Attorney General.