Snipers - HEADSHOT!

[Organized Chaos]

And it's not Snow Sniper support by the way :/ in case that's what you were looking for.

Simple Sniper - Rifle
[WIND/ Reptile/ Effect/ Level 3/ ATK 1200/ DEF 0]
This card cannot be destroyed by Spell Cards. Once per turn: You can select 1 face-up monster whose DEF is lower than this card's ATK; Banish that monster. During the End Phase of the turn you activated this effect; Return the banished monster to the field. If you cannot; destroy this card.

Sneaky Sniper - Huntsman
[WIND/ Reptile/ Effect/ Level 3/ ATK 1100/ DEF 600]
This card cannot be destroyed by the effect of Fusion Monsters. Once per turn: You can select 1 face-down card your Opponent controls; Send 1 "Sniper" monster from your Deck to the graveyard; Banish the selected card face-down. During your End Phase; Declare 1 Card Type. If the banished card is the declared Type; Send it to its owner's graveyard. If not, return the banished card to the field. Then destroy this card.

Strategic Sniper - Bazaar
[WIND/ Reptile/ Effect/ Level 3/ ATK 1000/ DEF 300]
This card cannot be destroyed by Trap Cards. During your Main Phase: You can send 1 banished card to its owner's Deck and banish 1 "Sniper" monster in your graveyard; Special Summon this card from your hand. Only 1 "Strategic Sniper - Bazaar" can be Special Summoned by this effect per turn. Up to twice per turn: You can select 1 card in your Opponent's graveyard; Banish the selected card. This card gains 500 ATK for each card banished by the effect of a "Sniper" card. If a "Sniper" card inflicts battle damage; Destroy this card during the End of the Battle Phase. If this card is destroyed; Add 1 "Sniper" monster, except "Strategic Sniper Bazaar", from your graveyard to your hand.

Sleepy Sniper - Sydney
[WIND/ Reptile/ Effect/ Level 3/ ATK 700/ DEF 600]
This card cannot be destroyed by the effects of Level 7 or higher Effect Monsters. Once per turn: You can select 1 monster your Opponent controls: Send 1 "Sniper" monster from your Deck to the graveyard; Reduce the selected monster's ATK and DEF by the combined ATK and DEF of the sent monster. If this card destroys a monster in battle; Banish the destroyed monster. Then your Opponent must reveal their hand; Banish any copies of the destroyed monster in your Opponent's hand.

Synthetic Sniper - Machina
[WIND/ Reptile/ Effect/ Level 3/ ATK 1300/ DEF 0]
This card cannot be destroyed by the effects of Xyz Monsters. Once per turn: Send 2 banished cards to their owner's Deck; Banish 1 random card from your Opponent's hand and change this card to Defence Position. You cannot Special Summon the turn you activate this effect. During your End Phase: You can banish this card in your graveyard; Add 1 "Sniper" monster, except "Synthetic Sniper - Machina", from your Deck to your hand. Then discard 1 card. This effect of "Synthetic Sniper - Machina" can only be activated once per turn.

Siphoning Sniper - Heatmaker
[WIND/ Reptile/ Effect/ Level 3/ ATK 0/ DEF 0]
This card cannot be destroyed by the effects of Synchro Monsters. When this card is Normal Summoned: Select up to 3 banished cards; Return the selected cards to their owner's Deck and your Opponent draws 1 card. Then this card gains 1000 ATK for each card returned by this effect. During your Main Phase 2, while this card has 2000 or more ATK and has not attacked this turn; You can tribute this card and discard 1 card from your hand; Special Summon 2 "Sniper" monsters with different names from your Deck. The Special Summoned monsters cannot activate their effects and are banished during the End Phase.

Darwin's Danger Shield
[Spell]
Tribute 1 "Sniper" monster you control. Return up to 3 banished cards your Opponent owns to their graveyard. Then draw cards equal to the number of cards returned. You can banish this card from your graveyard; Gain 1000 lifepoints. You can only activate 1 "Darwin's Danger Shield" per turn.

Jarate Toss!
[Spell]
Banish 2 "Sniper" monsters in your graveyard; Negate the effects of all face-up cards your Opponent controls your Opponent's next Standby Phase. During your Opponent's next End Phase; Return the banished cards to your Deck and your Opponent draws 1 card.

Sniper's Stab
[Normal Trap]
Activate only when you control a "Sniper" monster. During this turn; "Sniper" monsters you control cannot be destroyed by battle and your Opponent takes any battle damage you would receive this turn. During the End Phase of the turn you activated this card: If 2 or more "Sniper" monsters you control were destroyed: Banish 1 of those destroyed monsters; Banish 1 card on the field.

[Toffee.]

I C WUT U DID THAR
Also if you wanted these to be realistic, you would make them un-able to attack, since, you know, Snipers cant use W, S, A, or D.
(Joking, of course, about the in-able to attack part)

Though, Huntsman seems a a little ridiculous.
I mean it seems like a stretch, but you basically +1 off the Opponent setting a monster.

[Organized Chaos]

I C WUT U DID THAR
Also if you wanted these to be realistic, you would make them un-able to attack, since, you know, Snipers cant use W, S, A, or D.
(Joking, of course, about the in-able to attack part)

Though, Huntsman seems a a little ridiculous.
I mean it seems like a stretch, but you basically +1 off the Opponent setting a monster.

I wanted Huntsman to be somewhat of an upgrade to Sniper but it does look a bit borked. Will edit now. Thanks for commenting :).