Driven Arms Co Standard Forged Slip Fit Magwell – faster magazine changes for AR15 rifles

Driven Arms Co Standard Forged Slip Fit Magwell (SFM) is a magwell designed for standard mil-spec forged AR15 lower receivers, speeding up magazine changes and making reloading more reliable in all situations. The wider magazine well naturally guides the magazine into place, reducing failed reloads and improving weapon handling in competitive shooting, at the range, and in law enforcement and military applications. 

The Slip Fit design allows for quick installation without permanent modifications to the weapon. The magwell attaches securely around the receiver and seamlessly integrates with the AR15's original design, maintaining the weapon's ergonomics and compact profile.

Driven Arms Co has optimized the magwell's geometry to increase the reloading port's surface area at precisely the right points without unnecessary bulk or weight. The result is a more natural reloading motion and faster magazine changes, even with gloves on or in low light conditions.

Developed for real users

SFM™ magwells were developed in collaboration with Darq Industries. The goal was to create a magwell that performs equally well in dynamic competitive shooting and real-world situations. The result was the patented Slip Fit system, which is easy to install, highly reliable, and almost imperceptible.

Key benefits

• Significantly larger magazine well – up to over 150% larger compared to a standard AR-15 lower, making magazine changes significantly faster and more reliable even under stress, in difficult shooting positions, or in low light.
  
• Extremely lightweight construction – weighing only 14–16 g depending on the model.
  
• Low-profile design – The magwell does not snag on clothing or gear. It looks clean and factory-like, but performs like a competition magwell.
  
• Simple construction – Simple yet robust design. No permanent modifications to the lower.
  
• Excellent fit – Slip Fit technology securely locks the magwell in place.
• Made in the USA from high-quality materials.

Compatibility

Driven Arms Co. manufactures SFM™ magwells for several different models, so you can find the right magwell for your weapon:

• Standard Forged – Fits almost all forged AR-15 lower receivers.
  Daniel Defense
  BCM
  Nordic Components NC-15
  Geissele Super Duty
  Aero Precision AR-15 and X15
  HK MR556 A4
  Palmetto State Armory
  Anderson
  Colt
  

• American Defense Manufacturing: ADM UIC and ADM4

• Aero Precision: M4E1, M4E1 PRO and Ballistic Advantage Enhanced
   
• Sig Sauer MCX: Virtus, Rattler and Spear LT
   

• APC9/GHM9/SPC9 Glock Magazine: Fits B&T's APC9, GHM9, and SPC9 lower receivers that use Glock magazines

Installation

Thanks to the Slip Fit mounting design, the tightening screw does not require a high torque.

1. Tighten the screw until the split mounting point of the magwell just begins to close and the parts touch each other.
2. Then tighten the screw slightly less than half a turn more to the final tightness.

Caution: Do not overtighten the screw. The Slip Fit design locks securely in place with minimal tightening torque.