Great alternative to dedicated lower - Pro Mag AR-15 / M16 9MM Magazine Adapter Block For Colt 9mm SMG Magazines, Quick Change

I bought this adapter because it was cheaper than a 9MM lower.after receiving it i couldnt believe how easy it was to install.The two piece design requires no tools or disassembly of your existing lower and feeds from the bottom so you can switch back and forth at the range.Because i live in the Republic of New Jersey I was forced to by 10 round magazines as 15 round mags weren't available.The ASC mags i bought fit snug but dropped out easily when released.When loaded the rounds cycled flawlessly and bolt locked back after last round was fired.I would recommend this adapter for anyone who doesn't want to spend a ton of money on a dedicated lower.