Description
TheSMRS (Slim M-LOK Rail System) V3 by Dirty Bird Industries is a high quality and feature packed M-LOK handguard designed for AR-15 platform rifles and pistols. When designing this handguard, the team started from a basic set of requirements: The handguard must be tough, versatile, practical and have a straight forward install. Tough Machined from […]
TheSMRS (Slim M-LOK Rail System) V3 by Dirty Bird Industries is a high quality and feature packed M-LOK handguard designed for AR-15 platform rifles and pistols. When designing this handguard, the team started from a basic set of requirements: The handguard must be tough, versatile, practical and have a straight forward install.
Tough
- Machined from aircraft grade 6061-T6 aluminum extrusions.
- Type 3 hard anodizing or Cerakote™ sprayed at 1 mil thickness per spec.
Versatile
- M-LOK attachment slots on all sides, including theshaved portion of the top rail.
- 1913 Picatinny top rail withshavedand beveled center section.
- Snag free design with smooth, uniform octagonal surface ideal for accessory attachment or application of specialty coatings or patterns.
- The Gen 3 Handguard features integral 3 slot 1913 Picatinny Rail sections on the 12, 3, 6, and 9 o’ clock positions at the mouth of the handguard
Practical
- This version featuresthe patent pending anti-slip / anti-lift attachment method (ASALTM) for an easy, timing-free installation that providesan extremely rigid and secure attachment.Read below for more technical details about thisimpressive new attachment method.
- Compatible with most known low profile gas blocks.
Straight Forward Installation
- No frills clamp-on style installation using only a 1-3/16 Crow’s Foot wrench and 5/32″” Allen key
- Barrel nut does not requiring timing with the gas tube. No shims required.
The end result is a great looking, zero compromise handguard suitable for a wide variety of builds.
Interior Diameter
1.35″” ID
1.7″” Maximum Vertical ID (for considering vertical height of gas blocks)
Made in the USA
Dirty Bird Industries’ Limited LifetimeWarranty
Available Colors
Black, Magpul™ FDE, Magpul™ OD Green, Midnight Bronze, Sniper Grey
ASAL Attachement System Report
Eliminating Handguard Slip
The shockwave generated when firing an AR-15 creates over 1000 G’s of acceleration. This means that a one pound part will generate over 1000 pounds of force every time the rifle is fired. Combined with the thermal cycling generated when firing multiple rounds, it can be very difficult to keep a handguard from slipping forward or rotating. Many attempts have been made to solve this problem. Some solutions are overly complex, resulting in difficult installation and high manufacturing cost. Some designs, like the popular key seat, are overly simple. The key seat will stop a handguard from coming completely off of the rifle; however, it still allows some forward slip and 360 degrees of rotation.
Handguard Lift
Free-floating handguard mounting systems tend to produce an upward lift of the handguard, resulting in the muzzle end of the handguard floating higher than the receiver end. This lift can adversely affect the performance of the rifle, especially when using iron sights. Even if the handguard is only used for protecting your hand, a small amount of lift is noticeable when aiming down the sightline. This visually makes the rifle seem crooked. Even if the rifle performs with precision, it can create an optical illusion, thereby reducing accuracy.
Solution
The patent pending ASALTM(Anti-Slip / Anti-Lift) system is simple, easy to install, easy to manufacture, and a cost effective solution to handguard slip and lift issues. The ASALTMsystem locks the handguard to the barrel nut using a CamLokTMfastener featuring a 10 degree taper angle. This small taper creates a huge mechanical advantage, greatly increasing the force generated by a standard screw. The mating groove in the barrel nut is offset so as it is tightened, the handguard is pressed against the upper. This mitigates lift while also preventing slipping or rotation around the barrel’s axis. The result is a handguard that will not slip, rotate, or lift.
The result is a 10x decreases of handguard muzzle end lift.
This product is blemished. Blemishes may include:
- Plating inconsistencies
- Pits
- Scratches
- Dents
- Flaws in finish
Our blemished products are fully functional, they just didn’t meet our high standards. They are a great product at a discounted price for someone who doesn’t mind a slight imperfection. We do not accept returns on blemished products.
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Length |
12.7″, 9.7″, 7″, 15″ |
| Color |
Black, FDE, Midnight Bronze, OD Green, Sniper Grey |
| Rail system |
M-LOK Rail |
| Profile |
Free Float |
| UPC | D092-3, 810084370391, 810084370353, 810084370421, 810084370315, D092-1, 810084370285, 810084370414, 810084370322, 810084370377, 810084370346, 810084370384, 810084370308, 810084370407, 810084370339, 810084370360 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
