Best AR-15 End Plates for 2026: What Builders Actually Buy

Here are the AR-15 end plates GunPartPicker builders picked most, from our build data for July through September 2026, one per job, with what each one costs today.

• Best overall and best combo: Strike Industries Ultralight MFEP and anti rotation castle nut, red, about $38, tied for the most picked end plate at 17.7% of end plate picks.
• Best enhanced system: Fortis Lightweight Enhanced K1, about $38 to $45, its gold version tied for first at 17.7%.
• Best budget QD: BCM QD end plate, about $17 to $20, a hair behind at 17.3%.
• Best premium QD: Radian Ultralight QD end plate, about $40, fourth at 15.5%.
• Best for a single point sling: CMMG ambidextrous single point end plate, about $7 to $9, fifth at 4.5%.

Most addedStrike Industries

Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

Picked by hundreds of builders in Q3 2026/In stock

$35.95 at Palmetto State ArmoryCompare 6 stores+ Add to build

Fortis Manufacturing, Inc.

FORTIS LW ENHANCD AR15 END PLATE Black

In stock

$37.95 at BattleHawk ArmoryCompare 6 stores+ Add to build

Also popularBravo Company

BRAVO COMPANY AR15/M16 QD Receiver End Plate (BCM-EPM4-QD)

Picked by hundreds of builders in Q3 2026/In stock

$16.95 at BrownellsCompare 9 stores+ Add to build

Also popularRadian

Radian Weapons Ultralight AR15 QD Endplate Black

Picked by hundreds of builders in Q3 2026/In stock

$39.95 at BrownellsCompare 9 stores+ Add to build

Also popularCMMG

CMMG Ambidextrous Single-Point Receiver End Plate, Black

In stock

$6.75 at Classic FirearmsCompare 7 stores+ Add to build

An end plate is a small part, but it decides whether your rifle gets a rear sling point and whether you'll ever have to stake a castle nut.

The Picks, With a Verdict on Each

Best Overall and Best Combo: Strike Industries Ultralight MFEP and ACN

The end plate sits between your lower receiver and the castle nut on the buffer tube. A tab on the plate keys into the back of the receiver so the plate can't spin, and the castle nut clamps it tight. A mil spec setup then stakes the castle nut, punching metal from the plate into the nut's notches so it can't back out.

Strike's kit replaces two parts. You get the end plate and the castle nut in one box. The multi function end plate, or MFEP, adds a sling point. The anti rotation castle nut, or ACN, is made to lock against that plate instead of being staked into it.

The red ultralight kit and Fortis's gold K1 plate tied for the most picked end plate at 17.7% each, with BCM's QD plate just behind. We put the Strike first because the gold Fortis is sold out at the stores we track, and the Strike kit includes the castle nut. If you want a sling point and a castle nut you can remove later without drilling out stakes, builders picked this kit.

What we like

• The ultralight version is 7075-T6 aluminum, anodized in several colors, according to Strike's listing.
• Strike's listing for the standard MFEP and ACN says the plate has an anti rotate QD socket or sling loops built in.
• The castle nut is designed to work with this end plate, so you won't need a staking tool.

Watch out for

• Only one store we track has the red kit in stock, at about $38. Five others list it at about $36 and show it sold out.
• The standard MFEP and ACN, a separate listing, is about $35 and in stock at four stores.
• Strike designed the ACN to work with its own MFEP, so plan on using the two together.

Best Enhanced System: Fortis Lightweight Enhanced K1

Fortis skips the staking. Its K1 system pairs this plate with a tapered castle nut that seats into the plate with a snug friction fit. Fortis says the nut seals itself in place with no set screws and no ratchet.

The gold version tied the Strike kit for first at 17.7% of end plate picks, but it's sold out at the stores we track. The card shows the black version, the same plate in a different color.

What we like

• It's 7075-T6 aluminum, with a built in QD sling socket, according to the listing.
• The tapered castle nut holds without staking, set screws or a ratchet, per Fortis.
• The black version is in stock at six stores we track, at about $38 to $45.

Watch out for

• It costs more than twice BCM's QD plate, which also has a sling socket.
• The friction fit depends on Fortis's tapered nut. The listing doesn't say it works with a standard castle nut, so plan on buying the K1 system together.
• Gold, the color builders picked most, is sold out. Fortis also sells an OD green K1 plate and castle nut combo, which took 2.9% of picks on its own.

Best Budget QD: BCM QD End Plate

A QD end plate gives you a quick detach sling socket right at the back of the receiver. You push the button on a QD swivel and snap it in, without any separate mount on the buffer tube. BCM's plate does that one job in steel and costs less than half what the Strike, Fortis and Radian plates do.

It took 17.3% of end plate picks, a hair behind the two plates tied for first. CMMG's plate below costs less and also takes a QD swivel, but builders picked the BCM almost four times as often. If you want a rear sling point and you're happy staking a castle nut, start here.

What we like

• It's machined from steel and made in the USA, per BCM's listing.
• BCM says it has a QD swivel socket and accommodates staking.
• It's about $17 at most of the ten stores we track that have it in stock.

Watch out for

• It's an end plate only. You'll stake a standard castle nut against it, so budget for a staking tool or a punch.
• It's steel, while the Radian and Fortis plates are 7075-T6 aluminum.
• A few stores ask about $19 to $20, so check the card for the cheaper listings.

Best Premium QD: Radian Ultralight QD End Plate

Radian's plate is the light choice. Radian lists the weight at 6.5 grams and says it uses titanium alongside the aluminum body.

It took 15.5% of end plate picks, fourth overall and close behind the top three. Choose it if you're counting grams on a light build and still want a QD sling point at the receiver.

What we like

• It's machined from 7075-T6 aluminum with a hardcoat anodized finish, per Radian's listing.
• Radian gives a weight of 6.5 grams.
• The listing says it works with both mil-spec and commercial AR buffers, and most stores we track ask about $40.

Watch out for

• It needs a castle nut, per the listing, and the castle nut isn't part of this listing.
• At about $40 it costs more than twice the BCM plate, which also has a QD socket.
• One store asks about $46, so check the card for the cheaper listings.

Best for a Single Point Sling: CMMG Ambidextrous Single Point End Plate

CMMG's plate puts an ambidextrous quick detach sling mount at the back of the receiver, the setup builders use for a single point sling. It's the cheapest pick here.

It took 4.5% of end plate picks, fifth overall. Buy it if you run a single point sling, or if you want a QD socket for the least money.

What we like

• The listing says it's ambidextrous and quick detach, for AR-15 and LR-308 rifles.
• Our catalog lists it as steel, and CMMG backs it with its Lifetime Quality Guarantee, per the listing.
• It's about $7 to $9 at most stores we track, and eight of them have it in stock.

Watch out for

• The listing is short and gives no weight or finish details.
• One store asks about $16, so check the card for the cheaper listings.

Do You Need a QD End Plate?

Only if you want a rear sling point. A QD end plate puts it on the receiver instead of the stock. If your stock already has a QD socket, or you mount the sling on the handguard, a plain plate is fine.

Four of our five picks list a QD socket. The Fortis and Strike plates also change how the castle nut locks, so you get two upgrades in one part.

Staked or Anti Rotation?

A standard castle nut is staked: you punch the end plate's metal into the nut's notches so vibration can't loosen it. Staking works, but you'll have to clear the stakes before you can remove the buffer tube later.

Anti rotation designs skip that step. Fortis uses a tapered nut that seats into its plate. Strike uses a nut that locks against its own plate. Either way, you can pull the buffer tube without fighting old stakes.

Whichever you pick, torque the castle nut to the spec in the maker's instructions. A loose castle nut lets the buffer tube work loose, and that's the problem staking and anti rotation nuts both exist to stop.

How We Pick

Each pick is the end plate that the most different builders added to a GunPartPicker build for its job, from our build data for July through September 2026. One builder counts once. Where the most picked color is hard to buy, the card shows the same plate in a color you can buy today. Card prices are live, and every spec comes from the maker's listing.

Explore More Guides

• Buffer tube guide
• Buffer tube assembly guide
• Stock guide
• Lower receiver guide

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