LMT Defense MRP-L MLOK 7.25" Upper Receiver & 300BLK Barrel 8.25" Bundle L7NX1A-L7BX1B

LMT Defense MRP-L MLOK 7.25" Upper Receiver & 300BLK Barrel 8.25" Bundle L7NX1A-L7BX1B

LMT Defense
SKU:
L7NX1A-L7BX1B
$1,444.50
(No reviews yet)
Current Stock:
2
Adding to cart… The item has been added
Description

The LMT Defense MRP-L M-LOK 7.25" Upper Receiver & .300 Blackout 8.25" Barrel Bundle (L7NX1A-L7BX1B) is the ultimate ultra-compact .300 BLK package — combining LMT's most compact MRP-L upper receiver chassis with the purpose-designed 8.25" .300 Blackout pistol-length barrel. This bundle is everything you need to build an LMT-powered .300 BLK PDW, AR pistol, or SBR. The 7.25" M-LOK monolithic upper (L7NX1A) and the 8.25" .300 BLK barrel (R-L7BX1B) are LMT's shortest-length offerings in this caliber, delivering maximum maneuverability with full .300 BLK capability — excellent with both supersonic and subsonic ammunition.

  • Bundle Part Number: L7NX1A-L7BX1B
  • Includes:
    • LMT MRP-L Compact M-LOK 7.25" Upper Receiver Chassis (L7NX1A)
    • LMT 8.25" .300 Blackout MRP-L Barrel Assembly (R-L7BX1B)
  • Caliber: .300 Blackout / 300 AAC Blackout
  • Upper Receiver Length: 7.25" M-LOK monolithic one-piece aluminum chassis
  • Barrel Length: 8.25"
  • Rifling Twist Rate: 1:7" RH
  • Gas System: Pistol-length
  • Operating Method: Direct impingement
  • Sling Attachments: 4 QD sling swivel attachment locations (on upper)
  • Barrel Locking: Proprietary T-30 Torx two-bolt locking system
  • Compatibility: Standard mil-spec AR-15 bolt carrier groups (.308 bolt face)
  • Manufacturer: Lewis Machine & Tool (LMT Defense), Milan, Illinois, USA

Upper receiver chassis and barrel only — BCG and charging handle sold separately. Builds with this upper and barrel combination may require an ATF SBR tax stamp depending on your lower receiver and configuration. Consult applicable NFA regulations before building.