Rated 5/5 based on 7 customer reviews
Item Number: 399B,70SQ
 Review Average:  
 Number of Reviews: 7
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Detailed Description


Firing Pin Stop, 70 Series 1911, Square Bottom, Bullet Proof®, Blue

Slightly oversize, this rugged, tool steel firing pin stop will prevent excessive extractor movement and is left square on the bottom to help tune your slide’s recoil to your preference. Use a small bevel on the face of the stop for heavier loads, more bevel if you tend to shoot lighter loads.

  • This part will require light fitting
  • A fitted firing pin stop is a must for any 1911 spare parts kit
  • Series 70 will fit all .45 ACP caliber Wilson, USGI or Colt/Springfield/Kimber without a Series 80 style firing pin safety
  • Black oxide finished


In the world of high-performance handguns, Wilson Combat® Bullet Proof® parts stand alone for performance, construction and value. All Wilson Combat® Bullet Proof® parts are CNC machined from solid steel billets and precisely engineered for an absolutely perfect fit-no cheap castings or inferior, imported injection molded parts will ever wear the Bullet Proof® name.

Wilson Combat® Bullet Proof® Parts Have Been Engineered To Be The Highest Quality, Most User Friendly And Toughest 1911 Parts Available

Bullet Proof® Parts Are CNC Machined From Billets Of The Finest American Tool Steels To An Exacting Set Of Stringent Tolerances And Proprietary Specifications Like All 1911 Parts Were Intended To Be

All Bullet Proof® Parts Are Guaranteed From Defects Or Breakage Forever, The Best Parts With The Best Guarantee In The Industry

Choose from over fifty Bullet Proof® parts to complete your dream custom 1911.

 Product ReviewsClick here to review this item
No fitting!
Based upon a recommendation by Hilton Yam, I purchased three of these. One for my Springfield TRP, and two for my wife and daughters Tisas 1911s. I was amazed that no fitting was required in any of the pistols! I have used another brand of flat bottom firing pin stop on many occasions, and all required extensive fitting. but not the Wilson bullet proof, The slide fit was snug but not too tight, they fit the extractors perfectly, and easily seated to allow the firing pins to snap into place. I am excited about using other Wilson bullet proof products!
Wheelie Bar
Shaped bottom with a medium course stone to a .08 bull nose shape, polished with a fine stone,then flitzed to a mirror shine, used with a shok buff and 20 lb recoil spring in a 1911 that has a 30lb hammer spring. Ran 45acp hardball and 45 super like a champ. Felt recoil for Hardball was like the recoil of a full size 9mm and the 45 super was less than any of my 357 Sigs.
Bulletproof Perfection
Installed this in my mc operator. Went in with no fitting required.Snug fit. Didnt radius the square bottom and still no overcock on the hammer. Bulletproof parts are excellent!
Perfect cure for the Swartz safety blues
The Swartz safety found in Kimbers, can be a pain when removing the slide, hanging up on the gap provided by the series 80 FP stop. The WC flat bottom series 70 style FP stop cures that, filling that annoying void. I installed these in both my Pro Carry II and my Custom II. Other than making a slight radius on the bottom edge, these dropped right in, tight and square. If you own a Kimber, these are a true upgrade. Good job Wilson!
Nice fit
Nice tight fit. Took very little fitting.
Interesting change in recoil
After installing one of these and filing a very slight radius on the bottom, Ive noticed that recoil is much more straight back, instead of back and to the side. It seems to make recoil more straightforward, although to be fair, going from condition 3 to condition 1 is a bit tougher.
Tight fit.
This FPS fits perfectly. I only needed to polish the one side and it slid in with light effort against the Wilson Extractor. Easyer to install than the competition and better quality.