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Questions & Answers
So I take it this works in a FM 5 inch 9 mm upper? Expert Answer

Yes. The FM Products PCC .45 Extra Heavy Buffer weighs 7.5 ounces which is optimal for 9mm and .45ACP PCC/AR9 builds.

by Ethan, Gear Expert, December 13, 2022
Customer Reviews
Helpful Positive Review
Buffer for pcc by Jim, Verified Owner, August 19, 2025
Just what you need to get your PCC reciprocating mass over the minimum 22 oz.
1/1 found this helpful
Most Recent Reviews
seems decent by cl, Verified Owner, October 23, 2025
I’m hoping it’s heavy enough to prevent bolt bounce on my 9mm pcc. Seems like good quality but time will tell
Read All 2 Reviews

Product Discontinued by Manufacturer

FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights has been discontinued by FM Products and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts, AR15 Recoil Buffers yourself to try and find the perfect replacement for you!

Product Info for FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights

With a lower rate of fire and smoother overall function, you'll love using the FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights. With a patented locking system, these AR15 Lower Parts created by the experts at FM Products are created to lock the bolt catch in place, ensuring reliable feeding of your pistol in any blowback configuration. With a reusable salt bath nitride melonite/QPQ finish, the FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights won't rust, ensuring that you get to use this part for years to come. The heavy 7.5 oz. weight ensures reliable feeding of your blow-back 9mm and .45 upper receivers, making this the perfect pistol buffer for your needs. The reciprocating tungsten weights help soften felt recoil, greatly improving your pistol functionality. Pick up the FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights to improve your firearm's function and make it more comfortable for you to shoot.image

Features of FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights

  • Compatible with all blow-back 9mm and .45 upper receivers;
  • Salt bath Nitride Melonite/QPQ finish gives lubricity and wear-resistance;
  • Heavy 7.5 oz. (pistol) weight;
  • Reciprocating Tungsten weights helps feeding and softens felt recoil

Package Contents:

  • FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights

Gun Barrels

113 / 13
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Gun Parts and Accessories

130 / 30
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Gunsmithing Tools & Accessories

116 / 16
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Gun Triggers

116 / 16
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Magazine and Accessories

121 / 21
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

120 / 20
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Related Products to FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights

FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights Unavailable & Discontinued Models

List of Unorderable Models

  • USED FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights, Black, FM45-HB, EDEMO1, Condition Parts Only/Salvage, Wrong Product , MPN: FM45-HB-EDEMO1 , Code: 3JR-RBF-FPC45HB-FM45-HB-EDEMO-WP-F
  • FM Products PCC .45 Extra Heavy Buffer with Reciprocating Tungsten Weights, Black, FM45-HB , MPN: FM45-HB , Code: 3JR-RBF-FPC45HB-FM45-HB
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Last updated 2026-08-06 UTC.