UPDATE 2-Smith & Wesson buys perimeter security provider

* Buys privately-held Universal Safety Response

* Deal for up to 9.7 mln in shares and $26.2 mln in cash

* Says Q4 rev up 20 pct to $99.5 mln * Says deal to add about $50 mln to FY10 revenue

* Shares up more than 11 pct in after-mkt trade

(Adds conference call details, deal value, updates share movement)

June 18 (Reuters) - U.S. firearms maker Smith & Wesson Holdings Corp (SWHC.O) said it would buy privately held Universal Safety Response Inc (USR) in a cash and stock deal, to enter the perimeter security market.

The company, whose rivals include Ruger and Taurus for revolvers and Glock, Ruger and Springfield Armory for pistols, also said fourth-quarter revenue grew to $99.5 million, well ahead of Wall Street expectations of $90.83 million.

Demand for handguns and tactical rifles remained strong throughout the quarter, and firearms backlogs grew to over $200 million as of April 30, the company said.

However, the company said Thursday's deal represented the company's long-standing strategy to diversify beyond its heavy historical reliance on the retail channel and the firearms product category into professional and non-consumer businesses.