The introduction of the Ruger Precision Rifle (RPR) made some pretty serious waves late last year. The demand for the is still strong and that has lead a few manufacturers to create replacement hand guards specifically for the budget precision rifle.
Midwest Industries has introduced the MI RPR Handguard. This rail is based on their SP-Series AR-15 rails. It features plenty of M-LOK compatible slots, 6061 aluminum construction, and comes with a Magpul M-LOK 5 Slot Polymer Rail section. It is available in 15″ and 18″ lengths.
Seekins Precision is now offering the SP3R Ruger Rail System. The SP3R Ruger Rail features the same flat bottom shape that is found on the AR-based SP3R Rails. The flat bottom helps when shooting off bags or a barricade. This rail also features KeyMod or M-LOK attachment slots, QD sling swivel sockets, and 6061-T6 aluminum construction.
It says on Rugers site that the rifle can use any AR15 style hand guards. This would include BCM KMR’s, JP Rifle tubes, and any thing else you could think of. Please explain the issue I’m not seeing.
The swap may not always be as simple as it is made out to be: http://www.ar15.com/forums/t_2_438/269488_Seekins_SP3R_rail__Special_application__need_info.html
Manufacturers are giving their barrel nuts slight tweaks to make things work a bit smoother.