The best replacement for magpul is tapco.

The best alternatives to magpul are rated as following:
★★★★★  tapco
★★★★★  magpul pts
★★★★★  vltor
★★★★★  troy buis
★★★★  troy sights
★★★★  quad rail
★★★★  troy
★★★  hogue grip
★★★  caa
★★  b5
★★  hogue ak grip
★  promag
★  lancer
★  pts
★  pmag
★  ergo grip
  spikes trigger guard
  troy bad lever
  thermold
  ranger plate
  troy magazines
  blackhawk

Your alternative for magpul is not listed? Suggest!
Speaking about magpul, one probably shouldn't forget about dpms.

Other search terms related to magpul and their ratings are:
★★★★★ dpms
You have in mind a companion for magpul and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of magpul in all years. Click on graph for more.
magpul
tapco
magpul pts