What do you guys think of this current price on this rifle from Jet Guns? How about the rifle? Decent quality? SMITH & WESSON Model M&P15 Carbine, Part Number 811003. Smith & Wesson 30 + 1 rounds, 223 Rem. Carbine with 16" Barrel, Black Finish Features six position telescopic stock; single stage trigger; Mil-Spec flash suppressor compensator; a chrome lined gas key, bolt carrier, and barrel; thermo set M4 hand-guard fore-ends. $699 with Free shipping to your FFL http://www.jetguns.com/optics-ready-nato-811003-p-789.html Anybody here deal with Jet? If purchasing this carbine, what optics might be recommended for short distance such as indoor range and home protection etc.?