LMT Defense MRP-L compact length 7.25" AR-15 upper receivers ejection port side.

LMT Defense - MRP-L Compact Length AR-15 Upper Receiver - M-LOK - 7.25" - L7NX1A

LMT Defense
SKU:
L7NX1A
|
UPC:
815415017037.
$890.10
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Description

The LMT Defense MRP-L Compact M-LOK 7.25" AR-15 Upper Receiver (L7NX1A) is LMT's most compact Monolithic Rail Platform upper, purpose-built for pistol-length and ultra-compact 5.56 NATO and .300 Blackout SBR builds. The upper receiver and M-LOK handguard are machined from a single billet of aerospace-grade aluminum, creating an incredibly rigid and lightweight one-piece chassis system that eliminates any flex between receiver and handguard. The proprietary barrel locking system uses two locking bolts accessible from the right side of the receiver — all you need is a standard T-30 Torx bit. This system allows for quick barrel changes without specialized tools or a gunsmith.

  • Part Number: L7NX1A
  • Platform: AR-15, 5.56 NATO / .300 Blackout
  • Handguard Length: 7.25" M-LOK free-float monolithic rail
  • Gas System: Pistol-length
  • Barrel Twist: 1:7 (when paired with compatible LMT barrel)
  • Construction: Single-piece aerospace-grade billet aluminum upper receiver & handguard
  • Barrel Change System: Proprietary locking bolts — T-30 Torx bit required
  • Sling Attachments: 4 QD sling swivel attachment locations
  • Finish: Mil-spec Type III hard coat anodized
  • Compatibility: LMT MRP-L barrels, mil-spec AR-15 bolt carrier groups
  • Manufacturer: Lewis Machine & Tool (LMT Defense), Milan, Illinois, USA

The LMT MRP-L 7.25" upper receiver is the ideal chassis for an ultra-compact PDW, AR pistol, or SBR build. Compatible with LMT's full line of MRP-L barrels including the 8.25" .300 Blackout barrel (R-L7BX1B). Upper receiver only — barrel, BCG, and charging handle sold separately.