The Lantac UFA-S Ultimate Forward Assist (Solid) is a redesigned forward assist turned on a Swiss lathe from certified 4140 Cr-Mo steel (Lantac part no. 01-UP-UFA-S). Lantac USA heat treats the parts to 48-52 Rc and QPQ nitrides them, then upgrades the springs and the retaining pin. The cap is smaller in diameter, so it snags less, and its knurled edge gives a firm grip with a gloved or bare hand. It is made in the USA from USA sourced materials. It suits a builder replacing a worn forward assist with something tougher.

Key Specifications

• The design is UFA-S, the solid version of the Lantac ultimate forward assist.
• Material is certified 4140 Cr-Mo steel, improving strength and durability over the original materials.
• Hardness is 48-52 Rc, from heat treating all the parts.
• The finish is QPQ nitride, for corrosion resistance and a longer service life.
• The main plunger spring is 316 stainless music wire with closed end coils, for better seating and alignment.
• The plunger detent spring is zinc plated music wire, for corrosion resistance.
• The assembly is held with an improved spiral design pin in place of a slotted one, for added strength.
• The cap has a reduced diameter with knurling around the edge, lowering snag potential and improving grip.
• Assembly weight is 20.227 grams (0.7135 ounce), down from 22.481 grams on the original design.
• The outer surfaces are bead blasted to a satin, reduced-reflectivity look.

Frequently Asked Questions

What is the cap like? The cap’s diameter is reduced and its edge is knurled, so it snags less and gives a positive grip with a gloved or bare hand.

What are the springs made of? The main plunger spring is 316 stainless music wire with closed end coils, and the plunger detent spring is zinc plated music wire.

How much does it weigh? The assembly weighs 20.227 grams (0.7135 ounce), lighter than the original 22.481 grams.

Buy the Lantac UFA-S Ultimate Forward Assist, Solid

A stronger, lighter forward assist is an easy upgrade at the upper. Order it from our Lubbock, Texas gun shop for fast shipping, and see more AR forward assists.