Hi Donald , Yes the magazine that will fit Yes it will work with any standard AR-15 magazine from review "The magazine that comes with the PLR-16 is a 10 rounder, but it also is compatible with all AR-15 magazines for high capacity applications." link to review gunsamerica.com/blog/kel-tec-plr-16-5-56-223-pistol-range-report/
budsgunshop.com/catalog/product_info.php/products_id/38453/Kel-Tec+MAG+SU16+10RD+223

Please click the green box stating it as the best answer. We are rated on our answers and are just volunteers, not Buds employees. You can choose more then one Thank you!

Yes, this will take AR 15 magazines and drums: Pictures here : flickr.com/photos/methodl/2894410170 ---- google.com/search?tbm=isch&sa=1&ei=KHiPWtanJYH0zgLp5pnICw&q=keltec+556+drum&oq=keltec+556+drum&gs_l=psy-ab.3...417854.419347.0.419779.5.5.0.0.0.0.96.408.5.5.0....0...1c.1.64.psy-ab..0.1.95...0i10i30k1j0i8i10i30k1j0i10i24k1.0.nlMYaPlNJJQ#imgrc=EMag831ZXpOS_M:

Yes it will work with any standard AR-15 magazine from review "The magazine that comes with the PLR-16 is a 10 rounder, but it also is compatible with all AR-15 magazines for high capacity applications." link to review gunsamerica.com/blog/kel-tec-plr-16-5-56-223-pistol-range-report/

Please click the green box stating it as the best answer. We are rated on our answers and are just volunteers, not Buds employees. You can choose more then one Thank you!

Hi Donald , No here is the magazine that will fit budsgunshop.com/catalog/product_info.php/products_id/38453/Kel-Tec+MAG+SU16+10RD+223

Takes any AR15 Magazines by design Donald.

Yes, this takes AR15 compatible magazines.