MADBULL SI COBRA Ambi / Left Polymer Trigger Guard (Black) Net-Weight-(g)_56 or if you choose

or if you choose

VFC M4 GBBR High Speed Buffer & Spring Set

using the lower holes may dmage the wires and cause short circuit since the stock may clip the wires

Constructed of 3mm thick steel plate

MADBULL SI COBRA Ambi / Left Polymer Trigger Guard (Black) Net-Weight-(g)_56 or if you chooseMADBULL SI COBRA Ambi Left Polymer Trigger Guard (Black) Strike Industries Cobra series trigger guards are designed as direct replacements to the standard AR trigger guard These trigger guards feature a deeper angle rather than a straight linear line. This gives the operator more room when wearing gloves and for cold weather environments. Also eliminates the dreaded gap between the pistol grip and trigger guard. There are four models available,