Preview: Dillon OPAR 3.5—Curved

by
posted on January 20, 2024
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Dillion drop-in trigger assembly

The OPAR from Dillon Rifle Co. is a drop-in trigger assembly that provides AR-15 rifles with an additional level of protection against accidental discharges.

Operating in similar fashion to the “Glock-style” blade trigger safeties employed by many modern striker-fired pistol designs, a blade that bisects the trigger shoe must first be depressed before the trigger proper will retract to trip the sear.

Available in versions with either curved or straight trigger blades, and tuned to break at either 3 lbs., 8 ozs., or 5 lbs., 8 ozs., of pressure, the single-stage OPAR exhibited minimal creep, a crisp break, zero overtravel and a short reset in our testing.

MSRP is $265. For more information, visit dillonriflecompany.com.

Latest

Derya MAX 01
Derya MAX 01

Maxed Out: Derya's New MAX Shotgun

The Derya Arms MAX is a new semi-auto shotgun designed for serious competitive shooters that is made entirely in the USA.

Breaking Through the "Bulletproof Bubble"

The "Bulletproof Bubble" is one of the most frustrating things a shooter can experience, because it doesn't make any sense. Every round seems to land all around the exact center of your point of aim instead of in it.

Sharpen Your Shooting Skills: Prairie Dogs

Reactive targets, such as prairie dogs, offer many lessons about one’s long-range abilities.

The Armed Citizen® Aug. 7, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Gun of the Week: Zev Technologies x Magpul FDP-C

One of the most anticipated firearm releases of 2026 was the Zev Technologies FDP, a folding pistol-caliber design that the company produced in conjunction with Magpul Industries.

Review: Taurus 22TUC

Taurus USA's 22TUC is a little, polymer-framed .22 pocket pistol with a tip-up barrel design that, unlike many of the company's guns, is made entirely in the United States.

Interests



Get the best of American Rifleman delivered to your inbox.