The Era-Tac 10mm Height Spacer (MPN T0990-0010) is a dedicated mechanical riser block engineered to integrate with the Era-Tac UNIVERSAL Interface system. Manufactured in Germany by Recknagel, this modular spacer sits between the machined interface pocket of an Era-Tac tactical one-piece mount or ring top and secondary accessory plates, such as Picatinny rails or micro red dot adapters. By elevating the secondary platform by exactly 10 mm (0.394 inches), it prevents tall elevation or windage adjustment turrets, sunshades, and forward-mounted night vision or thermal clip-on optics from obstructing the sight picture of a top-mounted reflex sight.

Key Features:

• Mechanical Clearance: Lifts secondary optics by a fixed 10 mm, establishing direct line-of-sight clearance over high-profile primary scope turrets.
• High-Strength Construction: Machined from solid T7075 aircraft-grade aluminium for extreme rigidity under heavy rifle recoil.
• Protective Finish: Finished with a Mil-Spec Type III hardcoat black anodisation to withstand saltwater spray, UV exposure, and abrasive field conditions.
• Minimal Weight Addition: Weighs 9 grams (approximately 0.32 oz), preserving rifle balance on dynamic platforms.
• Complete Fastener Kit: Supplied with elongated Torx screws specifically sized to securely lock the 10 mm spacer block into the UNIVERSAL Interface.
• Recoil Envelope: Designed to maintain zero and mechanical integrity on weapon platforms up to .50 BMG when installed to factory torque specifications.

Specifications:

• Category: Scope mount height spacer
• Model Number (MPN): T0990-0010
• Added Height: 10 mm (0.394 in)
• Component Weight: 9 g (0.32 oz)
• Material: T7075 aluminium
• Surface Treatment: Mil-Spec Type III hardcoat anodised (black)
• Mounting Interface: Era-Tac UNIVERSAL Interface
• Fasteners Included: Elongated Torx screws
• Electrical Power: None (passive mechanical component)

Who is the Era-Tac 10mm Height Spacer for?

• Precision rifle competitors — adds 10 mm of elevation to secondary reflex sights mounted to Era-Tac block mounts, providing full reticle clearance over tall tactical turrets while contributing just 9 grams to total system weight.
• Tactical shooters running clip-on systems — raises piggybacked optical plates by 10 mm on the Era-Tac universal mount platform, lifting red dot lines of sight clear of bulky forward thermal or night vision clip-on housings.

Less suitable for: Shooters using Era-Tac Ultralight mounts, which omit the proprietary UNIVERSAL Interface to reduce mass, or operators who need less than 10 mm of turret clearance to maintain a lower height-over-bore, who should choose a lower-profile 5 mm scope mount height spacer instead.