DARQ Industries SFM™ (Slip Fit Magwell)

The SFM (Slip Fit Magwell) is a minimalist magwell designed to increase funnel size without compromising manual of arms. The SFM was designed with a few key points in mind:

The SFM allows for improved reloads while using Night Vision or when close focus is impaired. The SFM has a 170% increase in funnel size over stock.  This allows for smoother reloads but without hindering your standard manual of arms.

The Slip Fit attachment method is simple, lightweight, and secure. Using a single 4-40 socket head screw, weight is kept to an absolute minimum. The screw doesn’t require loctite as the way it attaches imparts positive tension onto itself, acting as a lock washer. However, if you are someone who loctites everything a single drop of blue will be more than enough.

We find that the SFM is the perfect blend of performance enhancement without excessive bulk or weight.  Highly recommended on every forged receiver you use.

Features and Benefits

• Includes 3/32” Hex Key
• Durable single piece nylon construction
• Simplified hardware reduces potential failure points to effectively none
• Ultralight construction: 0.49 oz including hardware