Rainier Arms Labor Day Sale. Please use COUPON CODE 0901 to see your final price at check out!
WHILE SUPPLIES LAST! All LMT uppers will come with a FREE headspaced Rainier Arms BCG!
Designed and manufactured by Lewis Machine & Tool Company, the patent-pending Monolithic Rail Platform, or MRP, is the most radical variation of an integrated rail system ever conceived. This one-piece receiver/free-floating handguard/rail system is precision machined from a solid aluminum forging for absolute strength and consistency. The MRP completely replaces the upper receiver and provides an unprecedented level of versatility to the operator.
- Free-floating barrel
- No loss of zero from rough handling
- Reduced temperature to handguard & optics
- Increased barrel life
- Easy-to-access/clean design
- Straight gas tube resists bending and retains better alignment with gas key
- Reduced number of parts (13)
- Quad Mil-Std 1913 rails
- Top rail position matches M4 & E3-type weapons ensuring optics and sight compatibility
- Accepts standard & enhanced M16-type (Stoner design) components
- 10.5" Chrome Lined - CQB
- 14.5" Chrome Lined - CQB
- 16" Chrome Lined - CQB - Mid Gas System
- Torque Wrench / 3 LMT Rail Panels
Bolt Carrier Assembly Must be Purchased Separately
FREE Charging Handle - Included
All NFA rules applies on 10.5" & 14.5" Uppers.