Home / Pistol Caliber Carbines / VIPER MODULAR FIXED STOCK VIPER MODULAR FIXED STOCK$3000 VIPER MODULAR FIXED STOCK quantity Add to cart Category: Pistol Caliber Carbines Product ID: 5474 Description Description The Viper Modular Fixed Stock provides the versatility of a collapsible stock, and the stability of a fixed stock, perfect for your Pistol Caliber Carbine! Also a great California Compliant solution! Related products RED FM-9 PISTOL CALIBER CARBINE UPPER RECEIVER FM-9 BILLET LOWER READY TO CUSTOMIZE $17400 AR15 MLS STOCK $4400