Blue Line Global 4400009: Own a piece of history without the expensive price tag. The Mauser MP-40 comes in a cost-effective .22 rimfire package! - Closest version of an MP-40 available on the market today. While maintaining a very close overall appearance to the original Wwii firearm the MAUSER-MP40 is manufactured with undeniable attention to detail and quality craftsmanship. - Caliber 22 LR - Barrel Length 16.3\" - Overall Length 32.48 - Rate of Twist 1 in 16 - Magazine Capacity 23 - Weight 7 1/4 lb