Table:
text: AR-15 variants
Numbered Colt military models
Numbered Colt military models
Colt_model_no_ Name_ Stock Fire_control Rear_sight Forward_assist Case_deflector Barrel_length Barrel_profile Barrel_twist Hand_guards Bayonet_Lug Muzzle_device
734A M16A2 Commando 3rd Generation S-1-3 A1 or A2 Yes Yes or No 11.5 in. A1 or A2 1:7 Short Ribbed No A1 or A2
735 M16A2 Commando / M4 Commando 3rd or 4th Generation S-1-3 A1 or A2 Yes Yes or No 11.5 in. A1 or A2 1:7 Short Ribbed No A1 or A2
737 M16A2 A2 S-1-3 A2 Yes Yes 20 in. HBAR 1:7 Ribbed Yes A2
738 M4 Commando Enhanced 4th Generation S-1-3-F A2 Yes Yes 11.5 in. A2 1:7 Short Ribbed No A1 or A2
741 M16A2 A2 S-1-F A2 Yes Yes 20 in. HBAR 1:7 Ribbed Yes A2
742 M16A2 (Standard w/ bipod) A2 S-1-F A2 Yes Yes 20 in. HBAR 1:7 Ribbed Yes A2

Question: What is the rear sight of the AR-15 variants under Cole model no. 735 among the numbered Colt military models?