The Sig Sauer P320 FCU can be used to complete a Caliber X-Change Kit or build out a custom P320 from scratch. Since this is legally the firearm, it must be shipped to a FFL for transfer. .
Be sure to check out our huge selection of grip modules, slides, barrels and other P320 parts for your custom build!
Internal Reference:
8900160
Barcode:
798681633319
| Brand: Sig Sauer |
| Model: P320 |
| Caliber: .357 Sig, .40 S&W, 9mm |
| Firearm Action: Semi-auto |
| Color: Gold |
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Customer Reviews
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Customer Feedback
Excellent.
By Anonymous
I highly recommend this fcu. Trigger pull and reset is amazing. Super easy to shoot on target. I paired it with a poly80 frame, sig pro cut slide, and backup tactical threaded barrel. 9/10 would recommend all these. Osage county guns was fast and kept me informed. Will do business with them again.
P320fcu
By Anonymous
Excellent turn around, great price, will buy again
Great product …
By Anonymous
I love the Sig P320 system. Interchangeable parts makes repairs and modifications very easy. I ended up with a full sized pro cut slide from some project I forgot about and I had wanted to convert of one my existing P330 Carry size to full size. All I needed to do was purchase this FCU and slap it on an extra carry size lowers I had and I end up with a new gun without modifying one of me existing firearms. Sig referred me to Osage when I called about the part which gave me confidence to buy here. Very satisfied with my purchase and the shipping with Osage.
Great Product
By Anonymous
Bought the P320 FCU and built a subcompact P320 with slides from Sig, and the Amend2 S300 grip module. I was a little hesitant test firing it at the range for the first time but the gun worked flawlessly through its first 100 rounds without a single hiccup. The trigger on this FCU is probably one of the best factory triggers with short pre-travel and creep and is very light, with a crisp break. The FDE color also matches with the gold barrel I got along with other gold or FDE color themes on the gun.
Best price and availability of the heart of the best handgun you can own
By Anonymous
I love the modularity that Sig has created with the P320. I love being about to buy the FCU and then build a handgun exactly the way I want it. AWESOME!!!
P320 FCU
By Anonymous
Arrived quickly and works great.
Added to my M17 frame.
By Anonymous
Works great. Nice trigger. Looking forward to range time.
A quality unit that upgrades the OEM P320 trigger
By Anonymous
The OEM trigger is quite good, but when I finally found this at Osage (bless you!). I bought it quick. I like the wider trigger which helps me put the fingertip pad instead of the joint. The takeup is quick, much like my flat trigger Geissele on my AR15s. The reset is a tad long, but I've had no problem practicing 2 and 3 shot threads. It feels good to me. Having to send it to my FFL is the law, so I endured this small delay (FFL was quick to notify me). This unit installed on my "frankenstein" P320 Compact, called that because it was made up of spare P320 parts. Will shortly install a Romeo 1 Pro. Gun operates VERY well. I like it.
Takedown lever from hell
By Anonymous
I, like them other reviewer, had a nightmare of a time getting the takedown lever off the fcu. I literally spent over an hour trying to get it out. Right out of the box was nothing but trouble. Once I did it literally took me 5 minutes to put my gun together. Looks great and shoots great. Takedown lever goes in and out with ease now. But right out of the box it did not want to come out at all. It was getting caught on the slide catch lever. Not sure what was up, but I love it now.
Sig Custom FCU
By Anonymous
Just happy to get an FCU to complete a build. The price point was reasonable from Osage. A little disappointed the FCU did not come with the larger slide lock, just the standard one. The trigger pull is nice, but no better than a couple of standard FCUs that I have in other P320s.