SIG SAUER P320 Full Size 4.7″ 9mm Optic Ready (2)17rd

Description

The SIG SAUER P320 Full Size 4.7-inch 9mm Optic Ready (2)17rd is a modular, striker-fired pistol built for accuracy and control right out of the box. This full-size handgun ships with two 17-round magazines, SIGLite night sights, and a PRO optic footprint so you can mount your favorite red dot without extra machining. At $523.37, it delivers proven reliability for home defense, target shooting, or duty use.

Manufacturer	SIG SAUER
Model	P320 Full Size
Material	Stainless steel slide, polymer grip module (per manufacturer specs)
Compatibility	All P320 grip modules and holsters designed for full-size 4.7-inch barrel
Finish	Nitron black
Weight	29.4 oz (empty, with magazine)
Condition	New

Key Features

• PRO Optic Cut – Why it matters: This factory-milled slide accepts most popular red dot sights (like the SIG ROMEO1PRO, Leupold DeltaPoint Pro, and others) without needing a plate or gunsmith visit, so you can get on target faster.
• SIGLite Night Sights – Why it matters: Tritium front and rear give you a clear sight picture in low light, which is critical for home defense or nighttime range sessions.
• Two 17-Round Magazines – Why it matters: You get a spare right in the box, saving you $40–50 compared to buying extra mags separately.
• Full-Length Accessory Rail – Why it matters: Mount a weapon light or laser without adapters, making this pistol ready for dark houses or outdoor use.
• Modular Grip System – Why it matters: Swap grip modules in seconds to fit different hand sizes or add a manual safety, all without tools.

Who It’s For

This P320 is a solid pick if you’re setting up a home defense pistol, hitting the range weekly, or carrying on duty. New shooters will appreciate the controllable recoil and easy-to-change grip, while experienced owners will like the optic-ready slide and 4.7-inch barrel for better sight radius. It’s also a good choice for anyone who wants one gun that can adapt—swap the grip module to compact size later if you decide to carry concealed.

Pros & Cons

• Pro: Modular design lets you change caliber or grip size later (9mm, .357 SIG, .40 S&W available).
• Pro: Striker-fired with a consistent trigger pull (about 5.5–6.5 lbs).
• Con: The PRO optic footprint is not compatible with RMR or Shield RMSc without an adapter plate—check your dot before buying.

Comparison

Feature	SIG P320 Full Size	Zev Technologies OZ9	Agency Arms AOS G17
Barrel Length	4.7 inches	4.49 inches	4.49 inches
Optic Cut	PRO footprint (factory)	RMR footprint (factory)	Agency Optic System (interchangeable plates)
Magazine Capacity	17 rounds	17 rounds	17 rounds
Price	$523.37	$1,200+	$900+
Modular Grip	Yes (full size, carry, compact)	Yes (Zev grip module)	No (standard Glock frame)

FAQ

Does this P320 come with the optic mounting plate?

Yes, the pistol ships with the PRO optic cover plate installed, plus the necessary screws for mounting a red dot. You do not need to buy a separate plate.

What holsters fit this full-size model?

Any holster made for a SIG P320 Full Size with a 4.7-inch barrel will work. The accessory rail is standard, so most light-bearing holsters also fit.

Can I use this for concealed carry?

The full-size grip and 4.7-inch barrel make it harder to conceal, but some people do with a good holster and belt. If you want to carry, you can swap to a compact or carry grip module later.

Is the trigger the same as other P320s?

Yes, it uses the standard P320 striker trigger with a flat or curved trigger shoe (depending on production date). It breaks around 5.5–6.5 lbs.

Ready to Order?

Grab the SIG SAUER P320 Full Size 4.7-inch 9mm Optic Ready (2)17rd today. It ships to all 50 states, leaves our shop in 1–2 business days, and comes with a 30-day return policy. Checkout is secure.

• ✅ Nationwide delivery (all 50 states)
• ✅ Ships 1–2 business days
• ✅ 30-day returns
• ✅ Secure checkout

Browse more in our Semi Auto Handguns or check out Pistol Parts & Accessories and Optics & Sights.

Last updated: April 2026