LMT Defense MRP-L M-LOK 9.25" "Hybrid" Upper Receiver L7SX1A

LMT Defense MRP-L M-LOK 9.25" "Hybrid" Upper Receiver L7SX1A

LMT Defense
SKU:
L7SX1A
$940.50
(No reviews yet)
Current Stock:
6
Adding to cart… The item has been added
Description

The LMT Defense MRP-L M-LOK 9.25" "Hybrid" Upper Receiver (L7SX1A) is LMT's newest 2026 addition to their Monolithic Rail Platform lineup — a versatile carbine-length upper designed for both piston and direct impingement operation. The "Hybrid" designation refers to the unique rail configuration: primary M-LOK attachment points along the handguard with short Picatinny sections at the 3, 6, and 9 o'clock positions, plus integrated QD sling sockets towards the ejection port. This gives shooters the lightweight benefits of M-LOK with the Picatinny sections needed for legacy accessories. Compatible with 10.5" to 16" LMT MRP-L barrel assemblies — making it one of the most flexible MRP uppers in the lineup.

  • Part Number: L7SX1A (R-L7SX1A)
  • Platform: LMT MRP-L (AR-15 light platform)
  • Handguard Length: 9.25" carbine-length
  • Rail System: M-LOK primary, with Picatinny sections at 3, 6, and 9 o'clock
  • QD Sockets: Integrated QD sling sockets towards ejection port
  • Barrel Compatibility: LMT MRP-L barrels, 10.5" to 16"
  • Operating Method: Compatible with both piston and direct impingement
  • Construction: Single-piece forged aerospace-grade aluminum upper receiver & handguard
  • Barrel Locking: Proprietary two-bolt system, T-30 Torx tool required
  • Gas System: Low-profile gas block with straight gas tube (barrel-dependent)
  • Color: Black, Type III hard coat anodized
  • Manufacturer: Lewis Machine & Tool (LMT Defense), Milan, Illinois, USA

New for 2026. Upper receiver only — barrel and BCG sold separately. Requires LMT monolithic MRP-L barrel assembly with low-profile gas block and straight gas tube.