Amazing product; thank you stern defense for r&d + ingenuity - Stern Defense MAG-ADMP9&40/P320 AR-15 M&P 9mm/.40 Magazine Conversion Adapter

This product is amazing! LRBHO functions well and it doesn't feel like something will break. If you own a P320 and want an AR 9, this is the product for you. No need to buy different magazines. This product truly adds to the P320 modularity; maybe not the P320 firearm, but it's heart, the magazine. No cons in terms of its functions. I used a Faxon 9mm BCG Gen 2 w/ PSA 10.5" 9mm Complete Upper. Buffer system was Blitzkrieg's Hydraulic 9mm Buffer, HD and JP .308 Carbine springs. Reliable, fun, and accurate.