Cody Lawhorn. Our piston is machined the exact correct length so that when used with our flat top valve it is always plug and play. Why mod the Crosman 1377? 90. orings, A must have for 13XX owners. ... 1377 Flat Top Piston is easy to install and can increase performance. 9 years ago. 2100 w/solid piston, bolt probe seal, TP seal, 1760 barrel, integrated silencer 1377 w/2100 pump assembly, 1760 barrel, TP seal, steel breach, custom stock 2240 w/valve mods, steel breach, TP seal, 13" barrel, bolt probe, hammer spring adjuster Would love to shoot the breeze sometime. Hi all. Recently the fully modified Crosman 1377 model, 2289G or 1389 has caught my eye. Sold Out. Cody Lawhorn. The custom piston pin is machined from tool steel with radiused ends to match the internal tube contour. Porting and barrel are absolutely bone-stock, and the valve has never been out of the gun. Favorite Answer. Skip navigation ... Crosman 1377 piston and valve mods - … Non-adjustable piston. Many of the ideas presented here also apply in one shape or form to other airguns as well. #Airgunscan be modified even by me. Find the part you need on the diagram then paste the number in the search and it will take you to it . Crosman 1377- love the shroud. 22XX Power Valve Mods. These mods WILL make a 1377 PAL rated! ... trigger kit, longer barrell, upgraded barrell band and maybe some piston/valve mods. Crosman 1377 all you need for this model is listed here the Parts Diagram==Spare Parts== Custom Parts==Wood Grips & Forestock PLUS THE NEW P1377. Share. Getting the Most Out of Your 22xx These mods work specifically with the Crosman 2240, 2250, and 2260. A rigid piston helps too (metal). CUSTOM CROSMAN & BENJAMIN AIRGUN PARTS. And yes there are a lot of things you can do with a 1377. 00. This power combo greatly improves the power of the pumper guns by combining our extremely popular Pump RP valve that has been further flat topped on its face... and our NEW (Oct. 2016) solid BRASS non-adjustable flat top piston.Yes, you read that right. It was doing 3.2 ftlbs! because you can Seriously for some people half the fun of airgunning is the modifications. This direct bolt on ... hammer strike on the valve resulting in more FPS by keeping the valve. Get the best deals for crosman 1377 pistol at eBay.com. I don't have the tools … The Green Crosman Forum > TheGreenCrosmanForum > Crosman Airgun ... and valve seals capable of holding such pressures. Outdoor Tv Antenna Shops Chicken Bites Air Rifle Paintball Rifles Shotgun Nerf Outdoor Power Equipment. This valve adds.Put a stronger hammer spring, an ... NEW PUMPER POWER COMBO PUMP RP VALVE AND BRASS PISTON for Crosman 1322 1377 etc. Jonathan. well, if you have 10 extra bucks, you can put a flat top piston and valve in the gun. HIGH PERFORMANCE PUMP RP VALVE for Crosman 1322 1377 BackPacker NO FLAT TOP Reqd - $42.66 ... and it costs less.Modders know that getting a little more from each mod can really add up. I've done the usual squash-the-sear-spring mod but it's still creepy and notchy. A person tell the modifications that he made in a 1322 pistol. Now it's just the trigger that lets the show down. UPGRADE PISTOL GRIPS for Crosman 13XX & 22XX Crosman 1377 piston and valve mods. In a files for modicate 1377 that Jon Walls send me. I used to sell something called the Hard Mount C, that I stopped selling because it looked sketchy with similar reliability. I am planning a project and would like to know what pressure can the 1377 pump pistol develop in the valve. Crosman Mod.1377 Plastic Barrel Rail $8.00 CAD Crosman Mod.1377 Pump & Pump Aim Pin $20.00 CAD Crosman Mod.1377 Set of Plastic RH & LH Grip Panels with Screw $20.00 CAD Crosman Mod.2240 Back Sight Complete $10.00 CAD 50. For Crosman 1322 1377 PC77 2289 P1322 P1377. And he speak about change I have an early phase III 1377 (bolt action) pistol - I've converted it into a carbine with a QD shoulder stock and it's very good indeed. Cheapest mods for Crosman 1377? Crosman 1377 piston and valve mods - YouTube. 9oz tanks are on the way and will probably work well, too. First mod was trigger and sear po Hand Guns Diy And Crafts Youtube Pistols Youtube Movies Revolvers. 2 posts 1377 piston and valve mod 1377 piston and valve mod. I'd done some reading and seen mention of reduced transfer port sizes. Yes, you read that right. Klayton Kidd uploaded this image to '1377c'. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Which of the available mod kits is the best? Testing out the new modifications done on my crosman 1377. I've sorted the valve TP and hammer spring and it's running a nice 5.2 ftlbs with JSBs. Crosman 1377, 1322 and Custom Shop 1300KT barrel band sight. My 1377 is a very accurate gun. Where can I get wood grips for the 1377 for a cheap price (Under 20$). Share with: Link: Copy link. Use with … Read More $ $62.88 Buy It Now 13d 1h. alright, here is my crosman 1322: flat top PISTON and VALVE buy a set from ebay 24" benjamin discovery barrel steel breech leapers bug buster skeleton stock, if i had to do this again i would buy an AR stock adapter, with said stock backpacker forearm all that adds up to 550 fps with 15 pumps. It felt the same to pump, same effort required but it just made that power. ... 1377, 1322, PC77, 1300KT & 2289G BACKPACKER $ 12. Here, for example, is a near-stock 1377, apart from a non-adjustable but "stuffed" piston, and debouncer. It's making 5.7 ftlbs I bought a brand new 1377 (the one with the black plastics). Similar to my Streamlined Kit, this is a lot cleaner looking and is utilizing a 12oz CO2 (shown in photos). Is the GMac one any good? 00. The valve body, cap and piston head are machined from 7075 aluminum. You would need to cut coils off the hammer spring to get it back under if you were concerned about that. 1377 Diagram & Spare Parts 1998-Present . You can buy a refurbished one for as little as $50, put a shoulder stock on it, a steel breach to mount a scope onto, a longer barrel and a flat top piston. ! Fully adjustable with the highest quality viton duro. If you order the flat top piston and valve combo is does everything in one shot, just check the transfer port size while you have it apart. Saved by paul lai. Crosman Mod.1377 Breech Top w Bolt. FYI, they will hold. I've been looking up all the 1377 mods posted here and have done a number of them, but my performance has gone down. 24 ... Upgraded trigger, spring, piston, valve, breech, and fore grip. Crosman 1377 Mods Collection by Cody Lawhorn. Relevance. ... MAGNUM 13XX FLAT-FACE VALVE & PISTON SET $ 89. The Green Crosman Forum > TheGreenCrosmanForum > Crosman Airgun Forum > 1377 piston and valve mod. Details. Non-adjustable piston. FLAT-TOP VALVE & PISTON for Crosman 1377, 1322, 1300KT, 2289G - EXTREME POWER ! Also, are the 1377's grips and stock hollow ... 4 Answers. Crosman 1377. However, you might consider trying air conservation. Crosman 1077 Powerlet Conversion Kit Hard Mount D: Here is another one of my adapter kits. Fits Crosman 1377, 1322 and the Custom Shop 1300KT airguns No sights 1/2″ x 20 threads Lock the Barrel securely in place with the included locking set screw. ...in the stock 1377 (i.e., 0.1ci : 0.26ci), your results aren't really surprising. Forums › Air Pistols › Air Pistols – Discussion › 1322 flat top valve and piston question Views : 314 Likes : 0 Likes : 0 | Subscribe August 2, 2020 at 11:08 am Link Mark2282Participant Member I would really like to do some power mods on my Crosman 1322. 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