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Rainier Arms UltraMatch Billet Upper & Ambi Lower Combo Set .308

Rainier Arms has expanded their UltraMatch Billet Upper & Ambi Lower Combo Set line with a new .308 Win version. In RECOIL Issue #11, we looked at their AR15 variant, which can be built out for several calibers (5.56mm, .300BLK, .22LR and others), and found it to be an excellent and fully-featured offering. The .308 set is similarly CNC machined from 7075-T6 aluminum, then milspec anodized black with a 60 Rockwell hardness rating.

The Rainier set conforms to the DPMS pattern, so the upper is compatible with DPMS high profile handguards and the lower accepts the ever-popular Magpul PMAGs. The lower receiver is chock full of features including an ambidextrous bolt release, QD sling swivel sockets on both sides, integrated trigger guard, tensioning fitment screw and a flared magwell. Note that the upper does not have a forward assist. Rainer is also including their Raptor ambidextrous charging handle with every set.


MSRP for the Rainer Arms UltraMatch Billet Upper & Ambi Lower Combo Set .308 is $649.


  • Ambidextrous Extended Bolt Release
  • A4 Feed Ramps
  • 7075 Billet Aluminum
  • Type III Hard Coat Anodized
  • Flared Magwell
  • Integrated Trigger Guard
  • Tensioning Screw for proper Upper/Lower Fit
  • Bolt Catch Assembly Screw (No Roll Pin to install)
  • Uses Standard DPMS Type .308 lower parts kit
  • Upper receiver is compatible with DPMS High profile 308 Handguards
  • Rainier Arms Raptor Ambidextrous Charging Handle


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