RRA uses a different thread for their upper receivers (so you can’t use standard barrel nuts or free float systems). There are several different upper receiver styles, three different magazine formats, and RRA even uses a different thread for their upper receivers (so you can’t use standard...
Function:Bag filter housing;Item No.:AR10-3;Material:stainless steel 304;Type:Bag Filter Housing;Maximum flow rate:6 T/H;Weight:7.66 kg;Dia of inlet/outlet:1 ;Dia of barrel:133 mm;Bag size:105*230 mm;Efficient Filtration Area:0.1 Square meter;Condition:N
Barrel ContourMT Barrel Material4140CM, SBN Barrel Twist1:10 Muzzle DeviceCMMG ZEROED Linear Compensator Muzzle Thread5/8 x 24 Gas Port LocationCarbine Gas Block0.750 Non-Adjustable Upper ReceiverBillet 7075 T6 Aluminum Lower ReceiverMk47 Billet 7075 T6 Aluminum ...
Platform Mk47 Caliber 7.62x39mm Operating System Direct Impingement Barrel Length 16.1 Barrel Twist 1:10 Barrel Contour MT Barrel Material 4140CM, SBN Barrel Twist 1:10 Muzzle Device CMMG ZEROED Muzzle Brake Muzzle Thread 5/8 x 24 Gas Port Location Carbine Gas Block 0.750 Non-Adjustable Upper ...