The M4E1 Slip Fit Magwell (SFM) brings “extra flare” to your Aero Precision M4E1 and Ballistic Advantage Enhanced receivers, increasing the existing funnel of the receiver by approximately 170%. The unique slip fit attachment method, co-developed with Darq Industries, offers users a simplified one piece construction with reduced points of (potential) failure – it has been proven through years of use on their EPC9, personal M4E1 builds, and Darq’s standard forged lower variants. The hardware follows this simplified approach, consisting of one 4-40 socket head screw and one threaded insert, offering a secure and reliable fit while also keeping the overall weight right at 0.50 oz.

Features:

• Low profile design, free of snag points, offers unobstructed manual of arms
• Durable single piece nylon construction
• Simplified hardware reduces potential failure points to effectively none
• Ultralight construction: 0.50 oz. including hardware

Please NOTE:

• Only compatible with Aero M4E1 and Ballistic Advantage Enhanced lower receivers.
• Due to the efficient attachment method, minimal torque is needed when tightening the screw. Simply tighten the screw until the split section begins to touch, then just shy of a 1/2 turn of the screw for final torquing.