Product Overview

*****Each upper will be accuracy tested and the verification group will ship with the order to the customer****

Our uppers are built using caliber-specific, precision-engineered reamers developed to maximize accuracy with today’s long, high-BC projectiles. These chambers are proven to maintain consistent performance without degrading accuracy from fouling during extended round counts between cleanings up to 300 rounds. They’ve been winning matches for years, and we’ve continually refined them based on feedback from nationally ranked PRS competitors to deliver the most reliable performance possible.

Each upper is paired with the longest functional gas system available for its barrel length and caliber, ensuring dependable operation with factory ammunition while minimizing recoil impulse and duration. The result is exceptional control, improved target tracking, and faster follow-up shots.

Designed to excel with both factory loads and handloads, these uppers also perform impressively with lighter-weight projectiles. If you need a versatile setup, these chambers handle dual-purpose roles with ease—lighter bullets tend to be naturally forgiving, and our reamers make the most of that advantage.

Aero Precision M4E1
Forward Controls Designed Forward Assist
Forward Controls Designed Charging Handle
Forward Controls Designed Ejection Port Cover
MTE AR15 LMOS Low Mass Competition Carrier, the JP Comes Standard but the MTE LowMass still maintains forward assist functionality.
Infinitely Adjustable Gas Block (.750), with set screw and Gas Tube
SPR 1:7 AR15 MTE Barrel with Matched Headspaced JP Bolt or Rexus UltraBolt
17.5 MTE ARCA Handguard
APA Gen II Fat B Muzzle brake

JPSC Recoil Reduction Spring will come with the upper as well.