There is a new Mosin-Nagant replacement stock being made by Archangel. For a variety of reasons, making a detachable magazine for the Mosin-Nagant rifles has been difficult. The basic rifle design is more than 120 years old, so adapting it to modern conventions is bound to have a few difficulties.
A quick check of YouTube found this video from mixflip on the new Mosin-Nagant stocks from the ProMag/Archangel booth at the SHOT Show:
The new magazines have a unique way of working, using a retaining clip on the exterior of the mag to keep the rounds in place. The stock comes with a five-round magazine, but ten-round mags will also be available for sale.
The stock is also set-up to work with the Timney trigger developed for the M-N. The stocks are supposed to work with virtually all style Mosin-Nagant rifles. They have a free floated barrel channel in the stock, but also have a tension screw to apply pressure to the barrel depending on the needs of your specific rifle for accuracy.
With an MSRP of $199, the new stocks are likely to be more expensive than what most of us paid for our M-N rifles. But, as the sources of the rifles dry up, those prices are going up. Besides, how cool is this new stock and having detachable mags for it? The ten-round magazines will carry a $24.95 suggested retail price.
Note: If you are a Mosin-Nagant owner, I highly suggest the book called “The Mosin-Nagant.” I reviewed this book a few years ago and highly recommend it. It has a lot of detail on the rifles, including deciphering all of those cartouches and markings.