Now for the popular MK2 lowers from Griffin Armament, we bring you our Slip Fit Magwell (SFM™)
Our tried and true attachment method, co-developed with Darq Industries, embraces simplicity, allowing our magwells to be comprised of only three pieces – the polymer “funnel”/magwell itself, one 4-40 socket head screw, and one threaded insert. This package offers a secure and reliable fit, while also keeping the overall weight right at .55 oz, making it nearly invisible on your weapon system until you utilize the 150%+ increased funnel size – all function, no fluff.
*only compatible with Griffin MK2 lower receivers. For Aero M4E1/BA Enhanced, please use this variant. For standard forged models, please use this one. For Radian ADAC, please use this one, and for ADM UIC/ADM4, please use this one. If you have any trouble when installing your SFM™ please contact us for assistance.
Please Note:
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.
John (verified owner) –
Couldn’t be happier with the way this fits the Griffin mk2 lower. I’ve tried other brands on other ar lowers and I’ve never had one fit as well. I will now buy driven arms co ones for other guns. Buy with confidence.