Defense against a home invasion? To start ... the usual steps ... fence, locks, lights, bars on windows/doors, alarm on windows/doors. Next, short barreled semi-auto shotgun w/ extended magazine tube ... Benelli or HK. Preference would be high capacity 9mm pistol ... Sig P-226. Shotguns loaded with 2 3/4 inch copper plated lead No. 1 buckshot. This will give a extra round of capacity. Pistols loaded with Underwood Extreme Penetrator ammo. Maybe would include a good AR - 15 w/ 55 gr. FMJ's ... or a AK - 47. Probably ... no. Sincerely. bruce.