WSSM AR-15 Upper Receivers 

WSSM Upper Conversion

The basic custom upper conversion features a Shilen match stainless barrel with my ventilated, three-piece hand-guard. It also features my new, clamp-on, low-profile gas-block, and our own slick-side, flat-top upper receiver.   Each upper comes complete with bolt/carrier, charging handle and magazine.  These uppers can be used with any, un-modified, mil-spec lower receiver.  You can switch from .223 Rem. to .25 WSSM in 20 seconds!  I am now using the Magpul anti-tilt followers as a standard feature in all of my WSSM magazines.  By using these followers, I have increased the reliable capacity of the magazine and enhanced the reliability of the upper.

_I am now offering a line of wildcat chamberings based off of the WSSM line!  I have dies, reamers and barrel-blanks in stock for:  .300 WSSM,  and .358 WSSM.  The .358 version qualifies for being Indiana big-game legal!

Left to Right: .223 Rem. .243 Win. .243 WSSM

WSSM and .223 Bolt

Big Bore WSSM Cases Formed

.358 and .30 WSSM

Sold Out

$1199.00
Standard Calibers  (.223, .243 and .25 WSSM)
Options:  

• Custom fluting, add $119.00
• Integral compensator, add $119.00
• Cerakote on barrel add $100.00 (Full Cerakote services available, call for pricing.)

 

 

  *Note* The new stainless steel magazines will increase your maximum COL from 2.260" to about 2.30"

$1249.00
Wildcat Calibers:        

• 6.5/.243 WSSM

• .30/.25 WSSM
• .300 OSSM (Olympic Super Short Magnum 28* shoulder-angle)  *NEW*
• .358/.25 WSSM  (Indiana deer legal cartridge)

Weight:

• 22", .25 WSSM, fluted upper, complete:  5.8 lbs
• 24", .25 WSSM, fluted upper, complete:  5.95 lbs
• 22", .25 WSSM, un-fluted upper, complete:  6.23 lbs
• 24", .25 WSSM, un-fluted upper, complete:  6.5 lbs

Note:  The .243 WSSM uppers in the same configuration will weigh .15 to .2 lbs more than the .25

_
Note: Where all of the Winchester factory loaded ammunition for the .223 and .243 WSSM fit perfectly in the modified AR-15 magazine, some of the .25 WSSM factory loads are slightly longer than will fit the magazine.  On the 120 grain power point, I have set the bullet back about .015" and have gotten great accuracy, perfect feed and function without any measurable pressure increase.  If you are going to hand-load for the .25 WSSM, the mag-length is not an issue.

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