Listing is for (1) NEW - MAG518 - MS-4 Sling in New Magpul Packaging.
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The MAG518  -  DUAL QD Sling Platform
The MPI MAG518 Dual QD Sling - Filling the same mission requirement as the standard MS-Three Sling, the MS-Four can quickly switch between one-point and two-point configuration.
The MS-4 maintains material construction & specifications identical to that of the standard MS-Three, but features a pair of heavy-duty push-button QD sling swivels for the one-point (rear) attachment rather than the standard MPI Paraclip.
This modification allows compatibility with QD sling cups & mounts commonly found on many receivers, receiver end plates & buttstocks, as well as on many handguards.
The Gen2 MS-4 features the same durable nylon construction and dual QD attachment as the original MS-Four with a new, low-profile quick-adjust slider that allows for secure, yet effortless sling adjustment!   The sling webbing has also been extended to allow for a comfortable fit with all body types & armor configurations.
Features:

MS-4 Gen 2 introduces a new design low-profile quick-adjust slider & extended web length for increased user comfort 
Functions as quick detach Single Point or Two Point sling!
1.25" webbing for comfort & super durability!
Features a QD Swivel for single point use & a second QD Swivel for use as a two point.
QD Swivel is compatible with QD mounts and cups on many different types of receivers, endplates, stocks & picatinny mounts.
Proudly 100% manufactured in the USA