Angstadt Arms is the premier manufacturer of pistol caliber carbines. Our patented UDP-9 is the lightest and strongest GLOCK magazine-fed 9mm AR-15 available. The UDP line of firearms can accept 9mm, 40 S&W, .357 SIG, 45 ACP and 10mm GLOCK magazines. Its compact size makes it ideal for home defense, security detail and anywhere space is at a premium. Available in semi-auto, integrally suppressed and select fire versions (for law enforcement and military), the UDP is configurable for any application. Our products are proudly made in the United States and come with a full lifetime warranty. (less)