Forward Controls LDFA

Specifically designed and purpose built for AR15s and M16s with ambidextrous charging handles, the Forward Controls LDFA is a snag-free, rimless forward assist with a small footprint.

The smaller footprint of the plunger face does not impact its usability.

CNC Billet construction, LDFA is machined from 4130 steel bar stock, heat treated with black nitride finish.

Proudly designed and made in the USA.

Compatibility Notes:

Forward Controls LDFA is designed and made to TDP specs and tolerances, and to work with TDP spec upper receivers. We’ve seen a troubling trend, where the lack of adherence to TDP specs and tolerances has created out of spec components, and receivers that are also out of spec to accommodate these parts, resulting in these receivers’ inability to accept TDP spec components.

We’ve observed a few billet receivers with out of spec forward assist plunger hole diameter which causes LDFA, and TDP spec forward assists to have very tight fit. We’ve also noticed many forward assists, both “factory” with unknown origin, and aftermarket forward assists, have been significantly thinner in the plunger area. These receivers and FAs are out of spec.

Specifically, the FA housing’s hole into which a forward assist is inserted has two diameters, the larger diameter hole for the plunger cap, the smaller hole for the plunger itself, These aforementioned billet receivers FA plunger holes are well short of the TDP specified diameter. LDFA’s plunger measures 0.311, well within TDP tolerances. To date, we haven’t seen any problems with forged upper receivers.

If you have a billet receiver, please measure the plunger hole in the FA housing. If it’s less than 0.312 in diameter, Forward Controls LDFA will be a tight fit.