Table:
text: AR-15 variants
Diemaco/Colt Canada models
Diemaco/Colt Canada models
Colt_model_no_ Diemaco_model Stock Fire_control Rear_sight Forward_assist Barrel_length Barrel_profile Barrel_twist Hand_guards Bayonet_Lug Muzzle_device
715 C7 A2 S-1-F A1 Yes 20 in. A2 1:7 Ribbed Yes A2
N/A C7FT A2 S-1-F Weaver Yes 20 in. A2 1:7 Ribbed Yes A2
N/A C7A2 Canadian 3rd Generation S-1-F Weaver Yes 20 in. A2 1:7 Ribbed Yes A2
750 Colt/Diemaco LMG/LSW A2 S-F A2 Yes 20 in. HBAR 1:7 Square LMG No A2
N/A LSW A2 S-F Weaver Yes 20 in. HBAR 1:7 Square LMG No A2
725 C8 3rd Generation S-1-F A1 Yes 14.5 in. A1 1:7 Short Ribbed Yes A2

Question: What type of handguard is associated with a rear sight of A1 and stock of A2 for Diemaco/Colt Canada models of the AR-15 variants?