Reviewer:
Richard Junkins from Lillian, AL United States
Update: I received an informative eamil from Bullpup, explaining that the Delrin extension was produced to exact tolerances, and that sanding may be required to allow it to fit to variable tolerances in the FN buttstock. I'll accept the explanation and sand my extension to fit. I don't want to return it, but i don't really want to sand it to fit, either. I've upgraded my rating, since it's otherwise a very good product. *** BPA Response: As discussed the product is a tight fit, to keep within the tolerances, and to stay tight when using in tandem. Any "sanding" should be slight/minor to get the correct glide, so the extension remains tight, but can slide on and off easily. Tight is better than loose for this product!!! ***
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0 of 0 people found the following review helpful:
Better fit.
September 10, 2017
Reviewer:
Freddie Chambers from Garland, TX United States
Extension make my ps90 more comfortable to shoot. Also adds some weight to the rear for better balance and feel. Good solid product.
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0 of 0 people found the following review helpful:
Great product!
March 31, 2017
Reviewer:
Anonymous Person from Birdsboro, PA United States
The extension fits perfectly and makes cheek weld comfortable without bending your neck in the usual position. Has a smooth finish and top notch quality. Highly recommended for anyone.
The product works flawlessly and extends the stock in 1 inch increments. The supplier was excellent on answering questions and worked with me to fine tune the product. I highly recommend this product and company.
Poor fit quality - Revised 
Better fit.