Fulton Armory's HUB Mount Fixes M1A Threads, Not Gas Issues

Fulton Armory now sells a $89.95 adapter that threads onto the M1A/M14's old-pattern muzzle and presents a standard 1.375x24 HUB interface, according to a review at GarandThumb.com.

Snapshot

The Fulton Armory M1A/M14 HUB Mount converts the rifle's .595x32 muzzle threads to the increasingly common HUB suppressor interface. GarandThumb.com frames it as a specifications-based look at fitment and installation rather than a range report, concluding the mount solves the thread problem but not the M14 platform's broader suppressor-related issues like gas system behavior and front-sight mounting.

Key points

• Specs: Made from hardened 4140 steel with a nitride finish, product number FA-M-186, rifle-side .595x32 thread to suppressor-side 1.375x24 HUB, with an optional $12.95 installation wrench.
• Fitment: Fulton lists compatibility with 18.5-inch and 22-inch barrels; 18-inch models fit too, but the mount must be removed to clean the gas piston.
• Front sight tradeoff: Removing the traditional flash suppressor assembly to install the mount can eliminate the rifle's original front-sight mounting point, requiring a separate gas-lock front-sight base not included in the kit.
• Gas system concerns: The review notes suppressor use can increase backpressure and bolt velocity on M14-pattern actions, and the standard M1A lacks a simple external gas adjustment, pushing some owners toward adjustable gas plugs.
• Alignment check required: GarandThumb.com stresses verifying bore alignment with a rod after installation, since damaged threads, debris or an improperly seated adapter can risk a baffle strike.

Quick take

GarandThumb.com's assessment is that Fulton has built a well-priced, well-made thread adapter that finally gives M1A/M14 owners a direct path to HUB-pattern suppressors. But the review is clear this is one piece of a larger project — buyers still need to sort out front-sight replacement, gas-system tuning and alignment verification before treating the rifle as suppressor-ready.

Read the full story: garandthumb.com