Martinez Tool Co. on Instagram: "Do you swing an M1 or an M4? #Repost @buildingwithalex ・・・ Side by side. M4 & M1. I don't think it's a right or wrong debate. But
WE CQB Master Replacement Ball Bearing Hammer Set for WE M4 / SCAR / G39 Airsoft Gas Blowback Rifle, Accessories & Parts, Gas Gun Parts, Hammer Assemblies - Evike.com Airsoft Superstore
Specwarfare Airsoft. G&P WA 120% Hammer Spring for WA M4 Series
Martinez M4-12oz Smooth Face Hammer | Akribis Leather