PMM Barrel and Compensator Combos for Sig P320

Size Guide: (Order the same length barrel and comp as your slide!!)

 

FULL SIZE 4.7″:

• M17
• XFull
• X-VTAC
• RXP XFull-Size
• RXP Full-Size
• Nitron Full-Size
• NOT compatible with the X-5 LEGION slide

 

COMPACT 3.9″:

• AXG Scorpion
• M18
• Nitron Compact
• RXP Compact
• *X-Carry  (OLDER X-CARRY SLIDES WILL REQUIRE A BARREL MODIFICATION SERVICE )
  • If you are unsure if you need the X-Carry Barrel Modification, please follow these guidelines.
    • If your slide is milled for the Romeo 1 Pro/Delta Point Pro footprint, you WILL NOT need the modification.
    • If your slide is milled for the Romeo 1, then you WILL need the modification.
    • Or you will need to measure the breech face on your slide. The measurement for the older X-Carry is .390″.

 

SUB COMPACT 3.6″:

• XCompact
• RXP XCompact

 

Please note, PMM barrels for the P320 are non LCI. If your slide has a loaded chamber indicator, you will need to remove it prior to installing our barrel and comp.

 

Includes:

1x PMM Compensator for 9mm P320s

• Micro Comp: 4140 Steel finished in the industry standard FDE PVD or Black DLC. Adds approximately 0.5″ in length
• Duty Comp: 7075 Aluminum finished in type III class 2 hardcoat anodize in black or FDE. Adds approximately 0.8″ in length
• Ultra Comp: 7075 Aluminum finished in type III class 2 hardcoat anodize in black or FDE. Adds approximately 1.1″ in length

1x PMM Threaded Barrel

• Material: 416 Stainless Steel heat treated to 38-42 HRC
• Rifling: Standard
• Twist: 1/10
• Caliber: 9mm
• Duty & Ultra Barrel: 1/2 x 28 threaded
• Micro Barrel: .45 x 28 threaded
• Non-LCI
• Coating: Black Diamond Like Coating (DLC)

1 x Shim Kit

• 4 x 0.010″ Shim
• 2 x 0.005″ Shim
• 1 x 0.002″ Shim
• 1 x 0.05mL Vial Loctite 272

Optional Muschi Mounting Block Recommended 

 

Note: Threaded pistol barrels are not legal in all areas. It is your responsibility to check your local laws before ordering a threaded barrel.  You also understand and agree that all firearms and firearms related activities are potentially dangerous if handled/conducted improperly and can pose risks and hazards to yourself and others, which may result in property damage, serious injury or death.

 

Barrel Compatibility:

• NOT compatible with any other device or suppressor

 

PMM Disclaimer:

PMM reserves the right to make esthetical design changes. While we try to accurately represent our current product offerings’ designs, there may be some esthetical changes from various historical product photos on this page and the product you receive. Please reach out if you need clarification on the current design customerservice@parkermountainmachine.com

 

FOR DUTY & ULTRA INSTALL

 

FOR MICRO INSTALL

FAQ:

Q: Can I buy just the comp to use with my factory threaded barrel?

A: No. The barrel and comp are proprietary to one another. Due to the thread depth in the comp and the length of thread on the barrel, our barrels and comps can only be used together as they are sold.

 

Q: I have your P320 micro barrel and comp combo. Can I buy just an ultra comp to use with my barrel?

A: No. The duty and the ultra barrels / comps are interchangeable, but the micro threaded barrel is a separate thread pitch so only the micro comps will work with those barrels.

 

Q: My slide has a loaded chamber indicator. Can I use your barrel and comp?

Yes. But you must first remove the indicator from your slide since our barrels do not have an LCI notch.

 

Recoil Reduction:

The PMM MICRO for the P320 was designed to work with most factory loaded ammunition and yield 30-35% reduction in muzzle climb (with 115gr UMC)

The PMM DUTY for the P320 was designed to work with most factory loaded ammunition and yield 30-35% reduction in muzzle climb (with 115gr UMC)

The PMM ULTRA for the P320 was designed to work with most factory loaded ammunition and yields and average 50-55% reduction in muzzle climb (with 115gr UMC)

 

Flush Fit:

There are only two ways to achieve a flush fit using our barrel and comps without modifications:

• Subcompact slide, PMM subcompact ultra comp and barrel, full sized frame
• Compact slide, PMM compact duty comp (previously called the “gen 2 comp”) and barrel, full sized frame

 

PMM Holster Recommendation:

Cascadia Concealment 

T-rex

Tier 1

Active Retention (Level 2 & 3) Duty Holsters (Namely Safariland):

PMM Recommendation- RDR Gear

 

P320 subcompact with Micro Comp= about 1/4″ longer than a compact P320, so full size holster required.

P320 subcompact with Duty comp= About 1/4″ shorter than a full size, so full size holster required.

P320 subcompact with Ultra= Length of full size P320 so F/S P320 holster required.

P320 compact with Micro Comp you will need a Full Size P320 holster.

P320 compact with Duty Comp= Length of full size P320 so F/S P320 holster required.

P320 compact with Ultra= Right around X5 length so a X5 holster is required.

 

PMM suggests using high quality holster manufacturers and not ones who skimp on material and care more about marketing.. We have great success with T-Rex Arms and Tier 1 Concealment.
T-Rex Arms also has a “threaded barrel” option on its holster builders and this option will cover our Micro comps perfectly.

 

Ammo Recommendations:

115gr:

Federal American Eagle

Speer Lawman

Wolf

Remington UMC

Sig Sauer

Fiocchi

Magtech

124gr:

Blazer

Speer Lawman

Federal American Eagle

Sig Sauer

Winchester

PMC

Remington UMC

147gr:

Most ammo will run, but you will see less performance due to a lack of velocity

 

Ammo to stay away from:

Blazer 115

Winchester White Box 115

Armscor 115

PMC 115

All reloads or reman ammo

 

PSA:

Micro comps and ultra comps cannot be purchased for use with other threaded barrels. The comp and barrel are proprietary to one another. Likewise, PMM proprietary barrels are only for use with the proprietary comp, and cannot be used with suppressors or other muzzle devices.