The BCM 1913 Light Mount Modular is an ambidextrous aluminum light mount for AR-15 and M4 rifles, attaching to a KeyMod handguard and presenting a 1913 Picatinny stub for a weapon light.
Instead of clamping the light body, this mount provides a short 1913 Picatinny rail section at the 3 or 9 o'clock position, so it takes any light built for a Picatinny interface rather than one specific body diameter. Change the light and the mount stays on the rifle.
It is fully ambidextrous, so a single part serves either side, and it offers an optional high and low mounting position for the 1913 rail section — useful for clearing a bulky handguard or bringing the light in tight against it. The body is low-profile aluminum and weighs 0.9 oz (26 g). Fitting uses a Torx wrench with the screws tightened to 30 in-lb, and Bravo Company USA suggests blue thread-locking compound if you want the fasteners secured.
How It Compares
This is the KeyMod version and will not attach to an M-LOK handguard — for that, choose the BCM 1913 Light Mount Modular for M-LOK, which is the same mount in the other interface. If your light has a bare body rather than a rail clamp, the BCM Modular Scout Light Mount is the KeyMod mount that grips the body directly instead.
Key Features
- 1913 Picatinny stub — takes any light with a Picatinny interface, not one body size
- High and low rail positions — set the light close in or clear of the handguard
- Fully ambidextrous — 3 or 9 o'clock from a single part
- 0.9 oz (26 g) aluminum — low-profile and snag-resistant
- Defined torque figure — 30 in-lb, with blue thread-locker optional
Compatibility & Fitment
Fits KeyMod handguards and forends on AR-15/M4 rifles. Once fitted it accepts any weapon light built for a 1913 Picatinny interface. No light is included.
Technical Specifications
Platform | AR-15 / M4 |
Fits | KeyMod handguards and forends; weapon lights with a 1913 Picatinny interface |
Type | Modular 1913 light mount, fully ambidextrous |
Material | Aluminum |
Weight | 0.9 oz (26 g) |
Mount Interface | KeyMod to 1913 Picatinny, 3 or 9 o'clock |
Adjustment | Optional high and low position for the 1913 rail section; Torx fasteners to 30 in-lb |
Brand | Bravo Company USA |
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
Is this the KeyMod or the M-LOK version?
This is the KeyMod version. The same mount is made for M-LOK handguards as the BCM 1913 Light Mount Modular for M-LOK. KeyMod slots have a round keyhole at one end; M-LOK slots are plain rectangles. Check your handguard before ordering — the two are not interchangeable.
What do the high and low positions do?
The 1913 rail section can be fitted in either a high or a low position. Low brings the light in tight against the handguard for the slimmest possible package; high lifts it clear, which helps on a bulky handguard or when a light head would otherwise foul the rail.
Which lights will it take?
Any weapon light built to clamp onto a 1913 Picatinny rail. Because the mount presents a rail rather than gripping the light body, it is not tied to one light diameter and it stays on the rifle when you change lights.
What torque should I use?
Bravo Company USA specifies 30 in-lb on the Torx fasteners, and suggests blue thread-locking compound if you want them secured against vibration. Re-check the fasteners after the first session.
