Check the listing for details. Glock Trigger Housing Pin Stainless Steel, Long Size, use w/Backstrap, Gen4 Gen5. Condition: New. Listed at 6.99 USD. Glock trigger housing pin made of 304 stainless steel. Replace your stock plastic pin with a stainless steel pin! Stainless steel pins provide more strength, tighter tolerance, and less trigger housing movement resulting in a more consistent trigger. This is the extended (long) pin for use with the modular backstrap. The backstrap is not included. Features:304 Stainless SteelFor use with MBS (modular backstrap system)Fits Gen4 and Gen5 models onlyNot for G42, 43, 43X, 48Approx Length 26mmFits Models Gen4 and Gen5 Only with Backstrap Installed (Backstrap not included):G17, 19, 19X, 20, 21, 22, 23, 26, 27, 29, 30, 31, 32, 33, 34, 35, 40, 41, 44, 4***Please Note: The item will be shipped in a First Class stamped envelope with no tracking number in order to lower the overall cost of the part. I usually ship the same day if possible. The part should arrive within 5-7 days but in some cases can take up to 10 days for First Class Mail. If you can't wait up to 10 days, choose the Priority Mail option with tracking.