OpenModularTurrets Mod 1.7.10, 1.7.2 features:

• Added Turret base Expanders to help your turret base scale better, both for inventory space and energy storage. Simply place them on your Turret base.

• Added 5 tiers of Hard Walls, basic building blocks with high levels of hardness and resistance.
• Added 5 tiers of Fences, non-opaque blocks which also has very high levels of hardness and resistance. Tier 2 and onward also act as barbed surfaces, hurting any entities that stand close to them, scaling with tier level.
• Turret base camouflage: Turret bases can now be disguised as a normal opaque block. Simply right click the base with the block in hand, and shift-right click with an empty hand to remove a disguise. Turret bases are now accessed by right clicking them with an empty hand.
• Recycler addon: Gives your turret a chance to negate ammo usage/generate ammo, per shot.