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PWS UXR Rifle: Multi-Caliber And Modular
Primary Weapon Systems delivers a highly modular semi-auto rifle platform that is easy to switch calibers, with its PWS UXR.
gatdaily.com
might be good for those who don't customize and price is decent along with cartridge changes (morons that say "caliber" and don't know any better) for what you get? i like how it's done, but you can't control recoil..........well felt recoil as much as you can with buffer tube types.