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Questions & Answers
What is the diameter inside or out?

Inner Diameter: 1.37 ”
Outer Diameter: 2.25 “

by TROY-tori, Verified Owner, March 3, 2026
Will this handguard work with an Adams Arms mid length piston Expert Answer

The Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black might work with a Piston Gas System. However, I recommend contacting Troy Industries to confirm compatibility.

by Hunter, Gear Expert, October 21, 2022
Customer Reviews
Helpful Positive Review
awesome drop in by kelly, April 16, 2020
if youre looking for a drop in quad rail that has absolutely zero movement, this is the one you want. its a bit difficult to install, but once you get it in there its super tight with no wiggle, even without the screws and tensioner. this thing feels...
Read More...
2/2 found this helpful
Helpful Positive Review
9" drop in by Topher, April 6, 2019
Absolutely love this item. Had a carbine length first on my M4 clone but needed another for my middy si here we are. The 4 locking screws really give this a nice solid fit as well as the tension block which presses against barrel for an even more sol...
Read More...
2/2 found this helpful
Most Recent Reviews
Solid Rail by Mike, Verified Owner, July 11, 2024
Tough and durable rail. There will be no good times had during the install. I would try to tape up the delta ring or plan on painting it. Overall, would recommend because this drop in has tension screws to add more security.
Read All 3 Reviews
Color:
Black
Handguard Length:
9 in
Gun Rail:
Picatinny
Gas System Length:
Mid Length
Condition:
New
Included Accessories:
Standard

Code: OY-HZ-SRAIDIDD9BT00-EE

MPN: SRAI-DID-D9BT-00

UPC: 812699017623

List: $225.00Save 11%
$199.99

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OP Bucks$4.00

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDIDD9BT00

The Troy Industries Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDSIDD9BT00 is a non-free floating direct replacement for all M4/M16 plastic handguards utilizing the carbine, mid-length and rifle-length gas systems. Troy Industries patented integrated Picatinny rails allows ultimate weapon accessory modularity. Machined from hardened aircraft aluminum with stainless steel components and finished in mil-spec hardcoat anodizing, the Troy Industries SRAI Rail System is built to last a long time. This Troy Industries SRAI Rail requires no gunsmithing and no permanent alteration to install. With numerous sized picatinny rails, you can mount pretty much all of your favorite accessories to this rail. For a non-free floating handguard with large picatinny rails, you won't be disappointed with the Troy Industries Drop In Enhanced BattleRail 9 Inch Mid-Length.image

Specifications for Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDIDD9BT00:

Manufacturer: Troy
Color: Black
Gun Type: Rifle
Handguard Length: 9 in
Handguard Type: Drop-In
Gun Rail: Picatinny
Gas System Length: Mid Length
Condition: New
Included Accessories: Standard
Country of Origin: USA
Quantity: 1

Package Contents:

  • Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDIDD9BT00

Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDIDD9BT00 Orderable Models

List of Orderable Models

  • Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black , MPN: SRAI-DID-D9BT-00 , UPC: 812699017623 , Code: OY-HZ-SRAIDIDD9BT00-EE

Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black SRAIDIDD9BT00 Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Troy Drop In Enhanced BattleRail 9 Inch Mid-Length Black , MPN: SRAI-DID-D9BT-00-DEMO , Code: OY-HZ-SRAIDIDD9BT00-DEMO
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