Flared magwells for additional firearm models can be found here   - Easier Mag Insertion: The wide flare on these friction-fit magwells increase the area the mag can be pushed into the magwell by a significant amount. They are designed to precisely line up with the existing magwell for a seamless mag insertion. - Mag Compatibility: The AR15 one have been tested with M2 Pmag, M3 Pmag, Lancer, and USGI metal mags. The AR10 ones have been tested with LR / SR SR-25 / M110 Pmag mags. I have not heard of any mags that don't work, but will update this listing if anyone has issues. - Installation: Simply line up the opening of the magwell with the magwell on your lower and slide it on. There should be some resistance, this is intentional to ensure the magwell stays put during use. Although it should not be necessary, it can also be tapped on gently with a rubber mallet. If it takes more force than this, contact me. - Friction-Fit: Precise design slides tightly on magwell bevel, as well as the ridge on the left portion of the lower for the milspec version, for a satisfying and solid "click" during installation. Due to the tight fit, it will not fit all models of lowers. See the compatibility list below: Milspec AR15 Version confirmed to fit forged lowers from the following brands:  Aero Standard (non-M4E1) Anderson Alien Armory Tactical Bad Attitude Dept. Bear Creek Black Rain Ordnance Brownells Bushmaster XM15 Centurion Arms CMMG MK4 Colt Daniel Defense MK18 Diamondback DPMS Expo Arms / Mega Arms Geissele JP Enterprises JP15 Lead Star Arms (Forged Grunt-15) POF Minuteman PSA Radical RF-15 Rock River Arms S&W Spike's Tactical Springfield ZRO Delta NOT compatible:  ATI Omni LRB Arms LWRC Q Sugar Weasel (little loose) Radical (little loose) Ruger AR-556 S&W M&P 15-22 Sig 516 Troy - PETG-CF Material: Printed out of higher temp-resistant material than standard PLA+. - Made in USA: 2200+ products designed and 3D printed in the heart of America in St Louis, Missouri by Hammy3DPrints.   Verisons currently available for: ADM UIC, ADM ADM4, Aero M4E1, Standard Milspec AR15, Aero M5, Aero EPC-9, PSA SABRE-10   MATERIAL: 3D printed using PETG-CF filament. WARRANTY: If this item breaks I will make any design adjustments, if needed, and send a replacement for free. Made in USA. Please note that the products may have slight imperfections as 3D Printing is rarely perfect. The exact product you receive may also slightly vary from the product photos as I iterate and improve upon designs based on user feedback.