5"x4.5", SA,single stack, perfect for the front pants pocket. Trouble is, factory 380's are a paltry 200 ft lbs out of it (at best,many are only 160 ft lbs). Shortening 38 super brass to 9x18 length, however, creates the 9x18 JB, and it will deliver 400 ft lbs,if it's loaded properly. That's 25% more power than the 22 mag offers, in a RIFLE, and many "think" that the .22 magrifle is a good choice for a surival arm. They aint too bright, but the 9x18 offers about the same power level as the 25-20 rifle does. Some guys considered the 25-20 to be OK for beaver,coyote and fox,if not small deer. A .45 ball rd is a VERY poor choice for deer,ya know. Yeah, hit one in both lungs with such a load, and it will die, EVENTUALLY, but itsbody is not likely to be recovered in the same county in which it was shot.